{"id":18299,"date":"2025-07-06T05:55:04","date_gmt":"2025-07-05T22:55:04","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=18299"},"modified":"2025-07-06T05:55:04","modified_gmt":"2025-07-05T22:55:04","slug":"hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/","title":{"rendered":"H\u00ecnh tr\u00f2n l\u00e0 g\u00ec? T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c v\u1ec1 h\u00ecnh tr\u00f2n \u0111\u1ea7y \u0111\u1ee7 chi ti\u1ebft nh\u1ea5t"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Hinh_tron_la_gi\" >H\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dac_diem_cua_hinh_tron_la_gi\" >\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Tinh_chat_cua_hinh_tron_la_gi\" >T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Mot_so_dang_bai_tap_ve_hinh_tron_thuong_gap\" >M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 h\u00ecnh tr\u00f2n th\u01b0\u1eddng g\u1eb7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_1_Nhan_biet_hinh_tron\" >D\u1ea1ng 1: Nh\u1eadn bi\u1ebft h\u00ecnh tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_2_Bai_tap_ve_dinh_nghia_hinh_tron\" >D\u1ea1ng 2: B\u00e0i t\u1eadp v\u1ec1 \u0111\u1ecbnh ngh\u0129a h\u00ecnh tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_3_Bai_tap_tinh_dien_tich_hinh_tron\" >D\u1ea1ng 3: B\u00e0i t\u1eadp t\u00ednh di\u1ec7n t\u00edch h\u00ecnh tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_4_Tinh_do_dai_doan_thang_trong_hinh_tron\" >D\u1ea1ng 4: T\u00ednh \u0111\u1ed9 d\u00e0i \u0111o\u1ea1n th\u1eb3ng trong h\u00ecnh tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_5_Xac_dinh_tam_duong_kinh_ban_kinh_hinh_tron\" >D\u1ea1ng 5: X\u00e1c \u0111\u1ecbnh t\u00e2m, \u0111\u01b0\u1eddng k\u00ednh, b\u00e1n k\u00ednh h\u00ecnh tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_6_Tinh_do_dai_ban_kinh_khi_biet_duong_kinh_va_nguoc_lai\" >D\u1ea1ng 6: T\u00ednh \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh khi bi\u1ebft \u0111\u01b0\u1eddng k\u00ednh v\u00e0 ng\u01b0\u1ee3c l\u1ea1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Dang_7_Ve_hinh_tron_khi_biet_do_dai_duong_kinh_hoac_ban_kinh\" >D\u1ea1ng 7: V\u1ebd h\u00ecnh tr\u00f2n khi bi\u1ebft \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c b\u00e1n k\u00ednh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Bai_tap_ve_hinh_tron_de_be_tu_luyen\" >B\u00e0i t\u1eadp v\u1ec1 h\u00ecnh tr\u00f2n \u0111\u1ec3 b\u00e9 t\u1ef1 luy\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Kinh_nghiem_giup_be_hoc_toan_hinh_tron_hieu_qua\" >Kinh nghi\u1ec7m gi\u00fap b\u00e9 h\u1ecdc to\u00e1n h\u00ecnh tr\u00f2n hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Tao_su_hung_thu_khi_hoc_toan_hinh_cung_be_voi_Shining_Home_%E2%80%93_Gia_dinh_Anh_Ngu_Math\" >T\u1ea1o s\u1ef1 h\u1ee9ng th\u00fa khi h\u1ecdc to\u00e1n h\u00ecnh c\u00f9ng b\u00e9 v\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Cung_co_kien_thuc_co_ban_ve_hinh_tron_cho_be\" >C\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh tr\u00f2n cho b\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Lien_he_viec_hoc_hinh_tron_voi_thuc_tien\" >Li\u00ean h\u1ec7 vi\u1ec7c h\u1ecdc h\u00ecnh tr\u00f2n v\u1edbi th\u1ef1c ti\u1ec5n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Hoc_toan_hinh_thong_qua_cac_tro_choi\" >H\u1ecdc to\u00e1n h\u00ecnh th\u00f4ng qua c\u00e1c tr\u00f2 ch\u01a1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Lam_bai_tap_thuong_xuyen\" >L\u00e0m b\u00e0i t\u1eadp th\u01b0\u1eddng xuy\u00ean<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-tron-la-gi-tong-hop-kien-thuc-ve-hinh-tron-day-du-chi-tiet-nhat\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>H\u00ecnh tr\u00f2n l\u00e0 h\u00ecnh nh\u01b0 th\u1ebf n\u00e0o? C\u00f3 \u0111\u1eb7c \u0111i\u1ec3m ra sao? C\u00f4ng th\u1ee9c t\u00ednh h\u00ecnh tr\u00f2n nh\u01b0 th\u1ebf n\u00e0o? ch\u1eafc h\u1eb3n l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng m\u00e0 h\u1ecdc sinh n\u00e0o c\u0169ng n\u00ean n\u1eafm r\u00f5. Ch\u00ednh v\u00ec v\u1eady, h\u00e3y d\u00e0nh ra 3 ph\u00fat \u0111\u1ecdc v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng ki\u1ebfn th\u1ee9c \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t v\u1ec1 h\u00ecnh tr\u00f2n trong b\u00e0i vi\u1ebft sau \u0111\u00e2y.<\/p>\n<p>                                                                    <\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a m\u00ecnh th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 s\u1ea3n ph\u1ea9m v\u00e0 l\u1ed9 tr\u00ecnh h\u1ecdc cho con.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i h\u1ecd t\u00ean<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i S\u0110T<\/p>\n<p>                                                                                Th\u00e0nh th\u1ea1o 2.000+ t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng anh<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng anh<br \/>\n                                                                                Gi\u1ecfi To\u00e1n &#8211; ti\u1ebfng Anh theo ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n EQ &amp; kh\u1ea3 n\u0103ng ti\u1ebfng Vi\u1ec7t<\/p>\n<p>                                                                                *B\u1ea1n ch\u01b0a ch\u1ecdn m\u1ee5c n\u00e0o!<\/p>\n<p>                                                                    \u0110\u0103ng K\u00fd T\u01b0 V\u1ea5n Mi\u1ec5n Ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hinh_tron_la_gi\"><\/span>H\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong c\u00e1c lo\u1ea1i h\u00ecnh h\u1ecdc trong to\u00e1n h\u1ecdc th\u00ec h\u00ecnh tr\u00f2n l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n m\u00e0 b\u00e9 s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc, c\u0169ng nh\u01b0 s\u1ebd c\u00f3 nhi\u1ec1u d\u1ea1ng b\u00e0i t\u1eadp xu\u1ea5t hi\u1ec7n trong c\u00e1c \u0111\u1ec1 b\u00e0i ki\u1ec3m tra, \u0111\u1ec1 thi. V\u1eady n\u00ean, vi\u1ec7c n\u1eafm v\u1eefng v\u1ec1 ki\u1ebfn th\u1ee9c h\u00ecnh tr\u00f2n l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-1.jpg\" alt=\"\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u00ecnh tr\u00f2n trong to\u00e1n h\u1ecdc. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dac_diem_cua_hinh_tron_la_gi\"><\/span>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Trong h\u00ecnh h\u1ecdc ph\u1eb3ng, h\u00ecnh tr\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 t\u1eadp h\u1ee3p nh\u1eefng \u0111i\u1ec3m n\u1eb1m b\u00ean trong v\u00e0 b\u00ean tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n, hay l\u00e0 t\u1eadp h\u1ee3p nh\u1eefng \u0111i\u1ec3m c\u00e1ch t\u00e2m m\u1ed9t kho\u1ea3ng nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng b\u00e1n k\u00ednh. C\u00f2n n\u1eeda h\u00ecnh tr\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00ecnh b\u00e1n nguy\u1ec7t.<\/p>\n<p dir=\"ltr\">Trong ki\u1ebfn th\u1ee9c h\u00ecnh tr\u00f2n, c\u00e1c em c\u0169ng ph\u1ea3i n\u1eafm r\u00f5 v\u1ec1 \u0111\u01b0\u1eddng tr\u00f2n. \u0110\u00e2y ch\u00ednh l\u00e0 qu\u1ef9 t\u00edch c\u1ee7a nh\u1eefng \u0111i\u1ec3m tr\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng, c\u00e1ch \u0111\u1ec1u t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n b\u1eb1ng m\u1ed9t kho\u1ea3ng c\u00e1ch cho tr\u01b0\u1edbc (b\u00e1n k\u00ednh). \u0110\u1ed3ng th\u1eddi, \u0111\u01b0\u1eddng tr\u00f2n c\u00f2n l\u00e0 m\u1ed9t h\u00ecnh elip v\u1edbi hai ti\u00eau \u0111i\u1ec3m tr\u00f9ng nhau, c\u00f3 t\u00e2m sai b\u1eb1ng 0, c\u0169ng nh\u01b0 l\u00e0 h\u00ecnh bao quanh nhi\u1ec1u di\u1ec7n t\u00edch nh\u1ea5t tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb chu vi b\u00ecnh ph\u01b0\u01a1ng.<\/p>\n<p dir=\"ltr\">Tuy nhi\u00ean, \u0111\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n kh\u00f4ng c\u00f3 di\u1ec7n t\u00edch nh\u01b0 h\u00ecnh tr\u00f2n v\u00e0 ch\u00fang k\u00fd hi\u1ec7u l\u00e0 d.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chat_cua_hinh_tron_la_gi\"><\/span>T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh tr\u00f2n l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H\u00ecnh tr\u00f2n c\u00f3 t\u00ednh \u0111\u1ed1i x\u1ee9ng tr\u00f2n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng k\u00ednh ch\u00ednh l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a d\u00e2y cung \u0111i qua t\u00e2m c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n, c\u0169ng nh\u01b0 ch\u00ednh l\u00e0 \u0111o\u1ea1n th\u1eb3ng l\u1edbn nh\u1ea5t \u0111i qua h\u00ecnh tr\u00f2n v\u00e0 chia ch\u00fang th\u00e0nh 2 n\u1eeda b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u1ed9 d\u00e0i \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n s\u1ebd l\u1edbn g\u1ea5p 2 l\u1ea7n b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n. B\u00e1n k\u00ednh c\u1ee7a h\u00ecnh tr\u00f2n ch\u00ednh l\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n \u0111\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n, k\u00fd hi\u1ec7u r.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u00e1ch t\u00ednh \u0111\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n s\u1ebd b\u1eb1ng 2 l\u1ea7n b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n. V\u00ed d\u1ee5 b\u00e1n k\u00ednh r = 6, \u0111\u01b0\u1eddng k\u00ednh s\u1ebd l\u00e0 6&#215;2 = 12cm.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n s\u1ebd b\u1eb1ng chu vi \u0111\u01b0\u1eddng tr\u00f2n chia cho s\u1ed1 pi \u03c0. V\u00ed d\u1ee5: \u0110\u01b0\u1eddng tr\u00f2n b\u1eb1ng 10cm, \u0111\u01b0\u1eddng k\u00ednh s\u1ebd l\u00e0 10 \u03c0 = 3.18cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n x\u00e1c \u0111\u1ecbnh b\u1eb1ng 2 l\u1ea7n c\u0103n b\u1eadc 2 c\u1ee7a di\u1ec7n t\u00edch h\u00ecnh tr\u00f2n chia \u03c0. V\u00ed d\u1ee5 di\u1ec7n t\u00edch \u0111\u01b0\u1eddng tr\u00f2n 25cm2, l\u00fac n\u00e0y \u0111\u01b0\u1eddng k\u00ednh s\u1ebd l\u00e0 5.64cm.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_dang_bai_tap_ve_hinh_tron_thuong_gap\"><\/span>M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 h\u00ecnh tr\u00f2n th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 ki\u1ebfn th\u1ee9c h\u00ecnh tr\u00f2n, v\u1edbi c\u00e1c b\u00e9 ti\u1ec3u h\u1ecdc th\u01b0\u1eddng s\u1ebd g\u1eb7p nh\u1eefng d\u1ea1ng b\u00e0i t\u1eadp t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_1_Nhan_biet_hinh_tron\"><\/span>D\u1ea1ng 1: Nh\u1eadn bi\u1ebft h\u00ecnh tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 d\u1ea1ng b\u00e0i t\u1eadp c\u01a1 b\u1ea3n nh\u1ea5t m\u00e0 c\u00e1c b\u00e9 l\u1edbp 1, l\u1edbp 2, l\u1edbp 3 s\u1ebd th\u01b0\u1eddng g\u1eb7p \u1edf c\u00e1c b\u00e0i t\u1eadp trong SGK hay c\u00e1c \u0111\u1ec1 ki\u1ec3m tra.<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp th\u01b0\u1eddng s\u1ebd cho m\u1ed9t v\u00e0i h\u00ecnh h\u1ecdc kh\u00e1c nhau ho\u1eb7c nh\u1eefng h\u00ecnh \u1ea3nh nhi\u1ec1u chi ti\u1ebft, y\u00eau c\u1ea7u b\u00e9 ch\u1ec9 ra \u0111\u00e2u l\u00e0 h\u00ecnh tr\u00f2n trong nh\u1eefng h\u00ecnh \u0111\u00f3. V\u1eady n\u00ean, \u1edf d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y y\u00eau c\u1ea7u b\u00e9 ph\u1ea3i c\u00f3 k\u1ef9 n\u0103ng quan s\u00e1t v\u00e0 ghi nh\u1edb \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh tr\u00f2n \u0111\u1ec3 ch\u1ecdn \u0111\u00e1p \u00e1n ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-2.jpg\" alt=\"B\u00e0i t\u1eadp nh\u1eadn di\u1ec7n h\u00ecnh tr\u00f2n. (\u1ea2nh: s\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_2_Bai_tap_ve_dinh_nghia_hinh_tron\"><\/span>D\u1ea1ng 2: B\u00e0i t\u1eadp v\u1ec1 \u0111\u1ecbnh ngh\u0129a h\u00ecnh tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">D\u1ea1ng b\u00e0i t\u1eadp n\u00e0y s\u1ebd thi\u00ean v\u1ec1 l\u00fd thuy\u1ebft v\u00e0 th\u01b0\u1eddng l\u00e0 b\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m v\u00e0 y\u00eau c\u1ea7u c\u00e1c em s\u1ebd ch\u1ecdn \u0111\u00e1p \u00e1n ch\u00ednh x\u00e1c cho m\u1ed9t \u0111\u1ecbnh ngh\u0129a, t\u00ednh ch\u1ea5t li\u00ean quan t\u1edbi h\u00ecnh tr\u00f2n.<\/p>\n<p dir=\"ltr\">N\u00ean \u0111\u00f2i h\u1ecfi c\u00e1c em c\u1ea7n n\u1eafm v\u1eefng \u0111\u1eb7c \u0111i\u1ec3m, t\u00ednh ch\u1ea5t, c\u00f4ng th\u1ee9c li\u00ean quan t\u1edbi h\u00ecnh h\u1ecdc n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c \u0111\u00e1p \u00e1n ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho c\u00e1c nh\u1eadn x\u00e9t sau, nh\u1eadn x\u00e9t n\u00e0o sai?<\/em><\/p>\n<p dir=\"ltr\"><em>A.Trong m\u1ed9t h\u00ecnh tr\u00f2n, c\u00e1c b\u00e1n k\u00ednh c\u00f3 \u0111\u1ed9 d\u00e0i b\u1eb1ng nhau.<\/em><\/p>\n<p dir=\"ltr\"><em>B. Trong m\u1ed9t h\u00ecnh tr\u00f2n, \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh b\u1eb1ng \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng k\u00ednh.<\/em><\/p>\n<p dir=\"ltr\"><em>C. Trong m\u1ed9t h\u00ecnh tr\u00f2n, \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh b\u00e9 h\u01a1n \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng k\u00ednh.<\/em><\/p>\n<p dir=\"ltr\"><em>D. Trong m\u1ed9t h\u00ecnh tr\u00f2n, c\u00e1c \u0111\u01b0\u1eddng k\u00ednh c\u00f3 \u0111\u1ed9 d\u00e0i b\u1eb1ng nhau.<\/em><\/p>\n<p dir=\"ltr\"><em>\u21d2 \u0110\u00e1p \u00e1n: B<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_3_Bai_tap_tinh_dien_tich_hinh_tron\"><\/span>D\u1ea1ng 3: B\u00e0i t\u1eadp t\u00ednh di\u1ec7n t\u00edch h\u00ecnh tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 d\u1ea1ng b\u00e0i t\u1eadp th\u01b0\u1eddng g\u1eb7p nh\u1ea5t, nh\u01b0ng c\u0169ng s\u1ebd kh\u00e1 kh\u00f3 v\u1edbi c\u00e1c b\u00e9 m\u1edbi h\u1ecdc h\u00ecnh h\u1ecdc. Ch\u1ee7 y\u1ebfu n\u1ed9i dung \u0111\u1ec1 b\u00e0i s\u1ebd cho th\u00f4ng tin v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c b\u00e1n k\u00ednh v\u00e0 y\u00eau c\u1ea7u c\u00e1c em t\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh tr\u00f2n t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<p dir=\"ltr\">N\u00ean c\u00e1c em c\u1ea7n ph\u1ea3i n\u1eafm r\u00f5 c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch, c\u0169ng nh\u01b0 c\u00e1c c\u00f4ng th\u1ee9c li\u00ean quan nh\u01b0 t\u00ednh \u0111\u01b0\u1eddng k\u00ednh, b\u00e1n k\u00ednh,\u2026 \u0111\u1ec3 c\u00f3 th\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c \u0111\u00e1p \u00e1n ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho h\u00ecnh tr\u00f2n C c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u00e0 d = 18 cm. H\u00e3y t\u00ednh di\u1ec7n t\u00edch S c\u1ee7a h\u00ecnh tr\u00f2n C?<\/em><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i:<\/em><\/p>\n<p dir=\"ltr\"><em>Ta c\u00f3, b\u00e1n k\u00ednh h\u00ecnh tr\u00f2n b\u1eb1ng m\u1ed9t n\u1eeda \u0111\u01b0\u1eddng k\u00ednh theo c\u00f4ng th\u1ee9c: R = d\/2<\/em><\/p>\n<p dir=\"ltr\"><em>&lt;=&gt; R = 18\/2 = 9 cm<\/em><\/p>\n<p dir=\"ltr\"><em>Di\u1ec7n t\u00edch h\u00ecnh tr\u00f2n C l\u00e0: S = \u03c0.R2 = 3,14.92 = 254,34 cm2<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_4_Tinh_do_dai_doan_thang_trong_hinh_tron\"><\/span>D\u1ea1ng 4: T\u00ednh \u0111\u1ed9 d\u00e0i \u0111o\u1ea1n th\u1eb3ng trong h\u00ecnh tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">B\u00e0i t\u1eadp n\u00e0y th\u01b0\u1eddng s\u1ebd cho m\u1ed9t h\u00ecnh \u1ea3nh v\u1edbi \u0111o\u1ea1n th\u1eb3ng n\u1eb1m trong h\u00ecnh tr\u00f2n, k\u00e8m theo nh\u1eefng d\u1eef ki\u1ec7n \u0111i c\u00f9ng v\u00e0 y\u00eau c\u1ea7u t\u00ednh m\u1ed9t \u0111o\u1ea1n th\u1eb1ng \u0111i k\u00e8m.<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp n\u00e0y, \u0111\u00f2i h\u1ecfi b\u00e9 ph\u1ea3i hi\u1ec3u \u0111\u01b0\u1ee3c t\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh tr\u00f2n, \u0111\u01b0\u1eddng tr\u00f2n \u0111\u1ec3 t\u1eeb \u0111\u00f3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5:<\/em><\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-4.jpg\" alt=\"T\u00ednh \u0111\u1ed9 d\u00e0i \u0111o\u1ea1n th\u1eb3ng trong h\u00ecnh tr\u00f2n. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>\u0110\u1ed9 d\u00e0i \u0111o\u1ea1n th\u1eb3ng IMIM l\u00e0:<\/em><\/p>\n<p dir=\"ltr\"><em>18 : 2 = 9 (cm)<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u00e1p s\u1ed1: 9 cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_5_Xac_dinh_tam_duong_kinh_ban_kinh_hinh_tron\"><\/span>D\u1ea1ng 5: X\u00e1c \u0111\u1ecbnh t\u00e2m, \u0111\u01b0\u1eddng k\u00ednh, b\u00e1n k\u00ednh h\u00ecnh tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u1ede d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y, c\u00e1c b\u00e9 s\u1ebd ph\u1ea3i d\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh tr\u00f2n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u nh\u01b0 t\u00e2m, \u0111\u01b0\u1eddng k\u00ednh, b\u00e1n k\u00ednh. C\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li dir=\"ltr\">T\u00e2m h\u00ecnh tr\u00f2n ch\u00ednh l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111\u01b0\u1eddng k\u00ednh.<\/li>\n<li dir=\"ltr\">\u0110\u1ed9 d\u00e0i \u0111\u01b0\u1eddng kinh s\u1ebd g\u1ea5p \u0111\u00f4i \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh.<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-5a.jpg\" alt=\"B\u00e0i t\u1eadp x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a h\u00ecnh tr\u00f2n. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_6_Tinh_do_dai_ban_kinh_khi_biet_duong_kinh_va_nguoc_lai\"><\/span>D\u1ea1ng 6: T\u00ednh \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh khi bi\u1ebft \u0111\u01b0\u1eddng k\u00ednh v\u00e0 ng\u01b0\u1ee3c l\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u1ec1 c\u00e1ch gi\u1ea3i c\u0169ng s\u1ebd ph\u1ea3i d\u1ef1a v\u00e0o m\u1ed7i li\u00ean h\u1ec7 gi\u1eefa \u0111\u01b0\u1eddng k\u00ednh v\u00e0 b\u00e1n k\u00ednh. Trong \u0111\u00f3 \u0111\u01b0\u1eddng k\u00ednh c\u00f3 \u0111\u1ed9 d\u00e0i g\u1ea5p \u0111\u00f4i b\u00e1n k\u00ednh.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a h\u00ecnh tr\u00f2n v\u1edbi b\u00e1n k\u00ednh cho tr\u01b0\u1edbc l\u00e0 9cm.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u00e0i l\u00e0m:<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n v\u1edbi b\u00e1n k\u00ednh 9cm l\u00e0: 9 x 2 = 18cm.<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u00e1p s\u1ed1: 18cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_7_Ve_hinh_tron_khi_biet_do_dai_duong_kinh_hoac_ban_kinh\"><\/span>D\u1ea1ng 7: V\u1ebd h\u00ecnh tr\u00f2n khi bi\u1ebft \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c b\u00e1n k\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00e1ch l\u00e0m b\u00e0i t\u1eadp n\u00e0y th\u00ec c\u00e1c em ph\u1ea3i d\u00f9ng compa, r\u1ed3i m\u1edf compa b\u1eb1ng \u0111\u1ed9 d\u00e0i b\u00e1n k\u00ednh. Sau \u0111\u00f3 ch\u1ea5m 1 \u0111i\u1ec3m l\u00e0m t\u00e2m tr\u00ean gi\u1ea5y v\u00e0 b\u1eaft \u0111\u1ea7u quay compa v\u1edbi t\u00e2m c\u1ed1 \u0111\u1ecbnh.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: V\u00e9 \u0111\u01b0\u1eddng tr\u00f2n t\u00e2m O b\u00e1n k\u00ednh 3cm.<\/em><\/p>\n<p dir=\"ltr\"><em>C\u00e1ch l\u00e0m:<\/em><\/p>\n<ul>\n<li dir=\"ltr\"><em>B\u01b0\u1edbc 1: M\u1edf compa v\u1edbi \u0111\u1ed9 d\u00e0i kho\u1ea3ng 3cm<\/em><\/li>\n<li dir=\"ltr\"><em>B\u01b0\u1edbc 2: \u0110\u1eb7t \u0111\u1ea7u nh\u1ecdn compa t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh l\u00e0m t\u00e2m O<\/em><\/li>\n<li dir=\"ltr\"><em>B\u01b0\u1edbc 3: L\u1ea5y \u0111\u1ea7u c\u00f2n l\u1ea1i compa \u0111\u1eb7t tr\u00ean gi\u1ea5y v\u00e0 xoay v\u00f2ng tr\u00f2n xung quanh t\u00e2m O \u0111\u00f3 th\u00ec ta s\u1ebd \u0111\u01b0\u1ee3c h\u00ecnh tr\u00f2n t\u00e2m O b\u00e1n k\u00ednh 3 cm.<\/em><\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_ve_hinh_tron_de_be_tu_luyen\"><\/span>B\u00e0i t\u1eadp v\u1ec1 h\u00ecnh tr\u00f2n \u0111\u1ec3 b\u00e9 t\u1ef1 luy\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau khi \u0111\u00e3 n\u1eafm ch\u1eafc \u0111\u01b0\u1ee3c c\u00e1c ki\u1ebfn th\u1ee9c v\u1ec1 h\u00ecnh tr\u00f2n v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp c\u1ee7a h\u00ecnh h\u1ecdc n\u00e0y, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 b\u00e9 c\u00f3 th\u1ec3 luy\u1ec7n t\u1eadp:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-5.jpg\" alt=\"(Ngu\u1ed3n: T\u1ed5ng h\u1ee3p)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Kinh_nghiem_giup_be_hoc_toan_hinh_tron_hieu_qua\"><\/span>Kinh nghi\u1ec7m gi\u00fap b\u00e9 h\u1ecdc to\u00e1n h\u00ecnh tr\u00f2n hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1edbi ki\u1ebfn th\u1ee9c v\u1ec1 h\u00ecnh tr\u00f2n s\u1ebd c\u00f3 nhi\u1ec1u ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n, nh\u01b0ng c\u0169ng c\u00f3 nhi\u1ec1u b\u00e0i t\u1eadp kh\u00f3 khi\u1ebfn c\u00e1c em g\u1eb7p kh\u00f3 kh\u0103n khi gi\u1ea3i. V\u1eady n\u00ean, \u0111\u1ec3 gi\u00fap tr\u1ebb chinh ph\u1ee5c \u0111\u01b0\u1ee3c c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp h\u00ecnh tr\u00f2n hi\u1ec7u qu\u1ea3, b\u1ed1 m\u1eb9 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 kinh nghi\u1ec7m h\u1eefu \u00edch sau \u0111\u00e2y:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tao_su_hung_thu_khi_hoc_toan_hinh_cung_be_voi_Shining_Home_%E2%80%93_Gia_dinh_Anh_Ngu_Math\"><\/span>T\u1ea1o s\u1ef1 h\u1ee9ng th\u00fa khi h\u1ecdc to\u00e1n h\u00ecnh c\u00f9ng b\u00e9 v\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u1edbi nh\u1eefng b\u1ed1 m\u1eb9 kh\u00f4ng c\u00f3 nhi\u1ec1u th\u1eddi gian hay kinh nghi\u1ec7m \u0111\u1ec3 d\u1ea1y b\u00e9 h\u1ecdc, b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 \u0111\u1ea7u t\u01b0 nh\u1eefng c\u00f4ng c\u1ee5, s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cho con c\u1ee7a m\u00ecnh.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-6.jpg\" alt=\"Trang b\u1ecb n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc cho b\u00e9 v\u1edbi Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef Math. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math l\u00e0 \u1ee9ng d\u1ee5ng d\u1ea1y to\u00e1n ti\u1ebfng Anh d\u00e0nh cho b\u00e9 m\u1ea7m non v\u00e0 ti\u1ec3u h\u1ecdc \u0111\u01b0\u1ee3c nhi\u1ec1u b\u1ed1 m\u1eb9 tin d\u00f9ng. \u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t c\u1ee7a \u1ee9ng d\u1ee5ng n\u00e0y ch\u00ednh l\u00e0 d\u1ea1y b\u00e9 h\u1ecdc to\u00e1n d\u1ef1a tr\u00ean nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau t\u1eeb h\u1ecdc theo ch\u01b0\u01a1ng tr\u00ecnh GDPT m\u1edbi nh\u1ea5t h\u01b0\u1edbng \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n n\u0103ng l\u1ef1c t\u01b0 duy cho tr\u1ebb, h\u1ecdc to\u00e1n th\u00f4ng qua tr\u00f2 ch\u01a1i v\u00e0 th\u1ef1c h\u00e0nh luy\u1ec7n t\u1eadp \u1edf s\u00e1ch b\u00e0i t\u1eadp b\u1ed5 tr\u1ee3 n\u00e2ng cao.<\/p>\n<p dir=\"ltr\">N\u1ed9i dung \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n v\u1edbi h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 d\u1ef1a tr\u00ean 7 chuy\u00ean \u0111\u1ec1 ch\u00ednh. Trong \u0111\u00f3 cung c\u1ea5p c\u1ea3 ki\u1ebfn th\u1ee9c v\u1ec1 h\u00ecnh h\u1ecdc \u0111\u1ec3 c\u00e1c b\u00e9 c\u00f3 th\u1ec3 v\u1eeba n\u1eafm ch\u1eafc n\u1ec1n t\u1ea3ng v\u1ec1 chuy\u00ean m\u00f4n, cho \u0111\u1ebfn th\u1ef1c h\u00e0nh \u0111\u1ec1u \u0111\u1eb7n \u0111\u1ec3 gia t\u0103ng kh\u1ea3 n\u0103ng ghi nh\u1edb v\u00e0 th\u1ef1c h\u00e0nh hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<p dir=\"ltr\">\u0110\u1ed3ng th\u1eddi, m\u1ed7i b\u00e0i h\u1ecdc \u0111\u1ec1u c\u00f3 video m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng, v\u1edbi h\u00ecnh \u1ea3nh ho\u1ea1t h\u1ecda ng\u1ed9 ngh\u0129nh, \u00e2m thanh s\u1ed1ng \u0111\u1ed9ng h\u1ee9a h\u1eb9n mang \u0111\u1ebfn nh\u1eefng gi\u00e2y ph\u00fat h\u1ecdc t\u1eadp th\u00fa v\u1ecb, h\u1ee9ng th\u00fa v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t cho b\u00e9.<\/p>\n<p dir=\"ltr\">T\u1ea3i Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math cho \u0111i\u1ec7n tho\u1ea1i Android<\/p>\n<p dir=\"ltr\">T\u1ea3i Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math cho \u0111i\u1ec7n tho\u1ea1i iOS<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cung_co_kien_thuc_co_ban_ve_hinh_tron_cho_be\"><\/span>C\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh tr\u00f2n cho b\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c c\u00e1c b\u00e0i t\u1eadp v\u1ec1 h\u00ecnh tr\u00f2n, \u0111\u00f2i h\u1ecfi c\u00e1c b\u00e9 ph\u1ea3i n\u1eafm v\u1eefng \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t v\u1ec1 h\u00ecnh h\u1ecdc n\u00e0y t\u1eeb \u0111\u1ecbnh ngh\u0129a, \u0111\u1eb7c \u0111i\u1ec3m, t\u00ednh ch\u1ea5t, nh\u1eefng c\u00f4ng th\u1ee9c t\u00ednh li\u00ean quan\u2026.<\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec t\u1ea5t c\u1ea3 nh\u1eefng b\u00e0i t\u1eadp h\u00ecnh tr\u00f2n \u0111\u01b0a ra \u0111\u1ec1u li\u00ean quan v\u00e0 \u1ee9ng d\u1ee5ng nh\u1eefng ki\u1ebfn th\u1ee9c \u0111\u00f3. N\u1ebfu kh\u00f4ng n\u1eafm v\u1eefng th\u00ec ch\u1eafc ch\u1eafn khi th\u1ef1c h\u00e0nh d\u1ec5 d\u1eabn \u0111\u1ebfn sai s\u00f3t.<\/p>\n<p dir=\"ltr\">V\u1eady n\u00ean, b\u1ed1 m\u1eb9 c\u1ea7n h\u1ed7 tr\u1ee3 trang b\u1ecb cho b\u00e9 nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y th\u1eadt v\u1eefng ch\u1eafc. C\u00f3 th\u1ec3 ki\u1ec3m tra xem b\u00e9 hi\u1ec3u th\u1ebf n\u00e0o l\u00e0 h\u00ecnh tr\u00f2n? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a ch\u00fang ra sao? C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch nh\u01b0 th\u1ebf n\u00e0o?&#8230; \u0110\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c n\u0103ng l\u1ef1c h\u1ecdc c\u1ee7a con v\u00e0 c\u1ee7ng c\u1ed1 k\u1ecbp th\u1eddi.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lien_he_viec_hoc_hinh_tron_voi_thuc_tien\"><\/span>Li\u00ean h\u1ec7 vi\u1ec7c h\u1ecdc h\u00ecnh tr\u00f2n v\u1edbi th\u1ef1c ti\u1ec5n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u1edbi d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 nh\u1eadn d\u1ea1ng h\u00ecnh tr\u00f2n, b\u1ed1 m\u1eb9 c\u00f3 th\u1ec3 l\u1ea5y c\u00e1c v\u00ed d\u1ee5 g\u1ea7n g\u0169i, li\u00ean h\u1ec7 v\u1edbi th\u1ef1c ti\u1ec5n v\u1edbi c\u00e1c \u0111\u1ed3 d\u00f9ng l\u00e0 h\u00ecnh tr\u00f2n \u0111\u1ec3 b\u00e9 c\u00f3 th\u1ec3 hi\u1ec3u v\u00e0 ghi nh\u1edb d\u1ec5 d\u00e0ng.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hoc_toan_hinh_thong_qua_cac_tro_choi\"><\/span>H\u1ecdc to\u00e1n h\u00ecnh th\u00f4ng qua c\u00e1c tr\u00f2 ch\u01a1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p kh\u00e1 hi\u1ec7u qu\u1ea3 v\u1edbi c\u00e1c b\u00e9 h\u1ecdc c\u1ea5p 1, khi c\u00e1c con \u0111ang trong \u0111\u1ed9 tu\u1ed5i kh\u00e1 ham ch\u01a1i.<\/p>\n<p dir=\"ltr\">Ch\u00ednh v\u00ec v\u1eady, b\u1ed1 m\u1eb9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 tr\u00f2 ch\u01a1i v\u1ec1 h\u00ecnh h\u1ecdc b\u00e1n s\u1eb5n ngo\u00e0i th\u1ecb tr\u01b0\u1eddng, hay t\u1ed5 ch\u1ee9c nh\u1eefng tr\u00f2 ch\u01a1i ngay trong ch\u00ednh c\u0103n nh\u00e0 c\u1ee7a m\u00ecnh nh\u01b0: t\u00ecm ki\u1ebfm \u0111\u1ed3 d\u00f9ng b\u1eb1ng h\u00ecnh tr\u00f2n, \u0111o k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng k\u00ednh h\u00ecnh tr\u00f2n, t\u00f4 m\u00e0u h\u00ecnh tr\u00f2n\u2026<\/p>\n<p dir=\"ltr\">V\u1edbi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y h\u00e3y c\u00f3 \u0111i k\u00e8m ph\u1ea7n th\u01b0\u1edfng \u0111\u1ec3 b\u00e9 c\u00f3 s\u1ef1 h\u1ee9ng th\u00fa trong qu\u00e1 tr\u00ecnh tham gia v\u00e0 h\u1ecdc t\u1eadp nh\u00e9.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/hinh-tron-7.jpg\" alt=\"H\u1ecdc to\u00e1n th\u00f4ng qua tr\u00f2 ch\u01a1i hi\u1ec7u qu\u1ea3. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lam_bai_tap_thuong_xuyen\"><\/span>L\u00e0m b\u00e0i t\u1eadp th\u01b0\u1eddng xuy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">D\u00f9 h\u1ecdc theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0o th\u00ec vi\u1ec7c l\u00e0m b\u00e0i t\u1eadp th\u01b0\u1eddng xuy\u00ean l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu, \u0111\u1ec3 gi\u00fap b\u00e9 hi\u1ec3u, ghi nh\u1edb v\u00e0 \u00e1p d\u1ee5ng ki\u1ebfn th\u1ee9c \u0111\u00e3 h\u1ecdc m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i b\u00e0i t\u1eadp h\u00ecnh tr\u00f2n tr\u00ean SGK, b\u1ed1 m\u1eb9 c\u00f3 th\u1ec3 t\u00ecm ki\u1ebfm th\u00eam c\u00e1c b\u00e0i t\u1eadp tr\u00ean internet, t\u1ef1 ngh\u0129 ra b\u00e0i t\u1eadp cho con,\u2026 \u0110\u1ec3 b\u00e9 c\u00f3 th\u1ec3 \u0111a d\u1ea1ng ngu\u1ed3n t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp v\u00e0 th\u1eed s\u1ee9c b\u1ea3n th\u00e2n hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<p dir=\"ltr\">Xem th\u00eam: C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng l\u00e0 g\u00ec? B\u00e0i t\u1eadp v\u00e0 b\u00ed quy\u1ebft th\u1ef1c h\u00e0nh hi\u1ec7u qu\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/p>\n<p dir=\"ltr\">V\u1ec1 c\u01a1 b\u1ea3n, ki\u1ebfn th\u1ee9c h\u00ecnh tr\u00f2n trong ch\u01b0\u01a1ng tr\u00ecnh ti\u1ec3u h\u1ecdc kh\u00f4ng qu\u00e1 nhi\u1ec1u nh\u01b0ng ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 h\u1ecdc c\u00e1c c\u1ea5p cao h\u01a1n. Ch\u00ednh v\u00ec v\u1eady, b\u1ed1 m\u1eb9 h\u00e3y gi\u00fap b\u00e9 h\u1ecdc, hi\u1ec3u v\u00e0 n\u1eafm r\u00f5 nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y, \u0111\u1ec3 trang b\u1ecb cho con nh\u1eefng ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc t\u1ed1t h\u01a1n cho t\u01b0\u01a1ng lai c\u1ee7a tr\u1ebb. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng.<\/p>\n<p>                                    Ngu\u1ed3n tham kh\u1ea3o<\/p>\n<p>Circle<\/p>\n<p>https:\/\/www.mathsisfun.com\/geometry\/circle.html<\/p>\n<p>Circles in Maths<\/p>\n<p>https:\/\/byjus.com\/maths\/circles\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u00ecnh tr\u00f2n l\u00e0 h\u00ecnh nh\u01b0 th\u1ebf n\u00e0o? C\u00f3 \u0111\u1eb7c \u0111i\u1ec3m ra sao? C\u00f4ng th\u1ee9c t\u00ednh h\u00ecnh tr\u00f2n nh\u01b0 th\u1ebf n\u00e0o? ch\u1eafc h\u1eb3n l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng m\u00e0 h\u1ecdc sinh n\u00e0o c\u0169ng n\u00ean n\u1eafm r\u00f5. Ch\u00ednh v\u00ec v\u1eady, h\u00e3y d\u00e0nh ra 3 ph\u00fat \u0111\u1ecdc v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng ki\u1ebfn th\u1ee9c \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t v\u1ec1&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-18299","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=18299"}],"version-history":[{"count":1,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18299\/revisions"}],"predecessor-version":[{"id":23696,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18299\/revisions\/23696"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=18299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=18299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=18299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}