{"id":18141,"date":"2025-07-06T03:30:04","date_gmt":"2025-07-05T20:30:04","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=18141"},"modified":"2025-07-06T09:05:06","modified_gmt":"2025-07-06T02:05:06","slug":"cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/","title":{"rendered":"C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh tam gi\u00e1c \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\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Tai_sao_can_chu_vi_hinh_tam_giac\" >T\u1ea1i sao c\u1ea7n chu vi h\u00ecnh tam gi\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Cong_thuc_tinh_toan_chu_vi_cua_tam_giac\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Tinh_chu_vi_cua_hinh_tam_giac\" >T\u00ednh chu vi c\u1ee7a h\u00ecnh tam gi\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Tinh_chu_vi_cua_cac_dong_phan\" >T\u00ednh chu vi c\u1ee7a c\u00e1c \u0111\u1ed3ng ph\u00e2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Tinh_chu_vi_cua_tam_giac\" >T\u00ednh chu vi c\u1ee7a tam gi\u00e1c<\/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\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Tinh_chu_vi_cua_tam_giac_vuong\" >T\u00ednh chu vi c\u1ee7a tam gi\u00e1c vu\u00f4ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Cong_thuc_tinh_toan_chu_vi_cua_tam_giac_trong_khong_gian\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c trong kh\u00f4ng gian<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Bai_tap_toan_tinh_toan_chu_vi_cua_tam_giac_de_em_be_thuc_hanh\" >B\u00e0i t\u1eadp to\u00e1n t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Bi_quyet_de_giup_tre_hoc_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_ve_chu_vi_cua_tam_giac_mot_cach_hieu_qua\" >B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc, ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 chu vi c\u1ee7a tam gi\u00e1c m\u1ed9t c\u00e1ch 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-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Xay_dung_mot_nen_tang_toan_hoc_vung_chac_som_cho_tre_em_voi_toan_hoc_khi\" >X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc s\u1edbm cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<\/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\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Hay_chac_chan_rang_em_be_cua_ban_co_kien_%E2%80%8B%E2%80%8Bthuc_co_ban_khi_hoc_chu_vi_cua_tam_giac\" >H\u00e3y ch\u1eafc ch\u1eafn r\u1eb1ng em b\u00e9 c\u1ee7a b\u1ea1n c\u00f3 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n khi h\u1ecdc chu vi c\u1ee7a tam gi\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Hoc_tap_ket_hop_voi_thuc_hanh_la_khong_the_thieu\" >H\u1ecdc t\u1eadp k\u1ebft h\u1ee3p v\u1edbi th\u1ef1c h\u00e0nh l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu<\/a><\/li><\/ul><\/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\/cong-thuc-tinh-chu-vi-hinh-tam-giac-day-du-chi-tiet-nhat\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>Chu vi c\u1ee7a tam gi\u00e1c c\u0169ng s\u1ebd c\u00f3 nhi\u1ec1u c\u00f4ng th\u1ee9c kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i h\u00ecnh tam gi\u00e1c. Do \u0111\u00f3, \u0111\u1ec3 gi\u00fap h\u1ecd n\u1eafm b\u1eaft v\u00e0 ghi nh\u1edb c\u00f4ng th\u1ee9c chu vi c\u1ee7a c\u00e1c lo\u1ea1i h\u00ecnh tam gi\u00e1c tr\u1ecdng l\u01b0\u1ee3ng, \u1ed5n \u0111\u1ecbnh, vu\u00f4ng, nh\u1ecdn, vui l\u00f2ng tham kh\u1ea3o b\u00e0i vi\u1ebft sau.<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tai_sao_can_chu_vi_hinh_tam_giac\"><\/span>T\u1ea1i sao c\u1ea7n chu vi h\u00ecnh tam gi\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ki\u1ebfn th\u1ee9c tam gi\u00e1c l\u00e0 g\u00ec? Ch\u1eafc ch\u1eafn m\u1ecdi ng\u01b0\u1eddi c\u0169ng bi\u1ebft, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u1ee7a khu v\u1ef1c h\u00ecnh tam gi\u00e1c v\u1edbi chu vi.<\/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\/chu-vi-hinh-tam-giac-1.jpg\" alt=\"T\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Th\u00f4ng th\u01b0\u1eddng, c\u00f4ng th\u1ee9c chu vi, khi \u0111\u01b0\u1ee3c hi\u1ec3u, s\u1ebd gi\u00fap b\u00e9 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp c\u00f3 li\u00ean quan trong ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3ng d\u1ea1y. \u0110\u1ed3ng th\u1eddi, ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong th\u1ef1c t\u1ebf c\u1ee7a cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c v\u1eadt th\u1ec3 h\u00ecnh tam gi\u00e1c th\u1ef1c.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_chu_vi_cua_tam_giac\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u1ef1a tr\u00ean t\u00ednh c\u00e1ch c\u1ee7a c\u00e1c c\u1ea1nh, g\u00f3c, chi\u1ec1u cao, t\u00f9y thu\u1ed9c v\u00e0o tam gi\u00e1c, s\u1ebd c\u00f3 c\u00f4ng th\u1ee9c chu vi kh\u00e1c nhau. C\u1ee5 th\u1ec3:<\/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\/chu-vi-hinh-tam-giac-2.jpg\" alt=\"T\u00f9y thu\u1ed9c v\u00e0o tam gi\u00e1c, s\u1ebd c\u00f3 c\u00f4ng th\u1ee9c chu vi kh\u00e1c nhau. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chu_vi_cua_hinh_tam_giac\"><\/span>T\u00ednh chu vi c\u1ee7a h\u00ecnh tam gi\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tam gi\u00e1c th\u01b0\u1eddng l\u00e0 m\u1ed9t tam gi\u00e1c v\u1edbi 3 c\u1ea1nh kh\u00e1c nhau, v\u1edbi c\u00f4ng th\u1ee9c chu vi nh\u01b0 sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = A + B + C<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 chu vi c\u1ee7a tam gi\u00e1c.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A, B, C l\u00e0 3 c\u1ea1nh c\u1ee7a tam gi\u00e1c \u0111\u00f3.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ednh to\u00e1n m\u1ed9t n\u1eeda chu vi h\u00ecnh tam gi\u00e1c s\u1ebd d\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c: \u00bdp = (A+B+C): 2<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5, \u0111\u1ed1i v\u1edbi m\u1ed9t tam gi\u00e1c v\u1edbi chi\u1ec1u d\u00e0i 3 c\u1ea1nh, 5cm, 7cm v\u00e0 10cm t\u01b0\u01a1ng \u1ee9ng. T\u00ednh chu vi c\u1ee7a tam gi\u00e1c.<\/em><\/p>\n<p dir=\"ltr\"><em>D\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c, ch\u00fang t\u00f4i s\u1ebd c\u00f3 gi\u1ea3i ph\u00e1p l\u00e0 P = 5 + 7 + 10 = 22cm<\/em><\/p>\n<p dir=\"ltr\"><em>Tr\u1ea3 l\u1eddi: chu vi tam gi\u00e1c l\u00e0 22cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chu_vi_cua_cac_dong_phan\"><\/span>T\u00ednh chu vi c\u1ee7a c\u00e1c \u0111\u1ed3ng ph\u00e2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tam gi\u00e1c c\u00e2n l\u00e0 m\u1ed9t tam gi\u00e1c v\u1edbi 2 g\u00f3c v\u00e0 2 c\u1ea1nh b\u1eb1ng nhau. C\u1ee5 th\u1ec3, \u0111\u1ec9nh c\u1ee7a tam gi\u00e1c c\u00e2n l\u00e0 giao \u0111i\u1ec3m c\u1ee7a hai b\u00ean. Do \u0111\u00f3, \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a tam gi\u00e1c, m\u1ecdi ng\u01b0\u1eddi s\u1ebd ph\u1ea3i bi\u1ebft \u0111\u1ed9 d\u00e0i ch\u00ednh x\u00e1c c\u1ee7a 2 c\u1ea1nh.<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c nh\u01b0 sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 2a + c<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A: Hai m\u1eb7t c\u1ee7a tam gi\u00e1c c\u00e2n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C: l\u00e0 \u0111\u00e1y c\u1ee7a tam gi\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: V\u1edbi c\u00f4ng th\u1ee9c chu vi n\u00e0y, n\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a c\u00e1c \u0111\u1ed3ng ph\u00e2n b\u00ean ph\u1ea3i.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho tam gi\u00e1c tr\u1ecdng l\u01b0\u1ee3ng \u1edf A v\u1edbi chi\u1ec1u d\u00e0i AB = 9cm, BC = 12cm. T\u00ednh chu vi c\u1ee7a tam gi\u00e1c.<\/em><\/p>\n<p dir=\"ltr\"><em>D\u1ef1a tr\u00ean chu vi c\u1ee7a chu vi c\u1ee7a c\u00e1c \u0111\u1ed3ng ph\u00e2n, ch\u00fang ta c\u00f3 t\u00ednh to\u00e1n p = 2 x 9 + 5 = 23cm. <\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chu_vi_cua_tam_giac\"><\/span>T\u00ednh chu vi c\u1ee7a tam gi\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tam gi\u00e1c l\u00e0 tam gi\u00e1c v\u1edbi 3 c\u1ea1nh b\u1eb1ng nhau. C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u1ecd s\u1ebd l\u00e0:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 3 xa<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: l\u00e0 chu vi c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A: L\u00e0 chi\u1ec1u d\u00e0i c\u1ea1nh c\u1ee7a tam gi\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh chu vi c\u1ee7a tam gi\u00e1c v\u1edbi c\u00e1c c\u1ea1nh AB = 7cm.<\/em><\/p>\n<p dir=\"ltr\"><em>D\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c, ch\u00fang t\u00f4i c\u00f3 t\u00ednh to\u00e1n p = 3 x 7 = 21cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chu_vi_cua_tam_giac_vuong\"><\/span>T\u00ednh chu vi c\u1ee7a tam gi\u00e1c vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tam gi\u00e1c vu\u00f4ng l\u00e0 m\u1ed9t tam gi\u00e1c c\u00f3 g\u00f3c vu\u00f4ng b\u1eb1ng 90 \u00b0. C\u00f4ng th\u1ee9c chu vi c\u1ee7a h\u00ecnh \u1ea3nh s\u1ebd l\u00e0:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = A + B + C<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A v\u00e0 B: Hai m\u1eb7t c\u1ee7a tam gi\u00e1c vu\u00f4ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C: Truy\u1ec1n thuy\u1ebft v\u1ec1 tam gi\u00e1c vu\u00f4ng.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh chu vi c\u1ee7a tam gi\u00e1c v\u1edbi chi\u1ec1u d\u00e0i c\u1ee7a d\u1ecbch chuy\u1ec3n = 5cm, cb = 8cm v\u00e0 ab = 12cm.<\/em><\/p>\n<p dir=\"ltr\"><em>D\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c, ch\u00fang t\u00f4i c\u00f3 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n p = 5 + 8 + 12 = 25cm.<\/em><\/p>\n<p dir=\"ltr\">V\u1edbi m\u1ed9t tam gi\u00e1c vu\u00f4ng, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ednh chu vi khi ch\u00fang ta bi\u1ebft \u0111\u1ed9 d\u00e0i c\u1ee7a 2 c\u1ea1nh.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho tam gi\u00e1c b\u00ean ph\u1ea3i ABC, v\u1edbi Ca = 5cm, CB = 8cm, chu vi.<\/em><\/p>\n<p dir=\"ltr\"><em>T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, AB l\u00e0 c\u1ea1nh vu\u00f4ng trong C. \u0110\u1ec3 t\u00ednh to\u00e1n quy\u1ec1n c\u1ee7a tam gi\u00e1c b\u00ean ph\u1ea3i, \u00e1p d\u1ee5ng \u0110\u1ecbnh l\u00fd Pitago \u0111\u1ec3 t\u00ednh to\u00e1n nh\u01b0 sau:<\/em><\/p>\n<p dir=\"ltr\"><em>AB\u00b2 = CA\u00b2 + CB\u00b2<\/em><\/p>\n<p dir=\"ltr\"><em>Ab\u00b2 = 25 + 64<\/em><\/p>\n<p dir=\"ltr\"><em>AB = 9,4cm<\/em><\/p>\n<p dir=\"ltr\"><em>V\u00ec v\u1eady, chu vi c\u1ee7a tam gi\u00e1c vu\u00f4ng l\u00e0:<\/em><\/p>\n<p dir=\"ltr\"><em>P = 5 + 8 + 9.4 = 22.4cm<\/em><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_chu_vi_cua_tam_giac_trong_khong_gian\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c trong kh\u00f4ng gian<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><em>Gi\u1ea3 s\u1eed, trong b\u00e0i to\u00e1n t\u00ednh to\u00e1n chu vi trong kh\u00f4ng gian v\u1edbi m\u1eb7t ph\u1eb3ng oxy, ch\u00fang ta c\u00f3 2 \u0111i\u1ec3m v\u1edbi t\u1ecda \u0111\u1ed9 A (1; 3), B (4; 2).<\/em><\/p>\n<p dir=\"ltr\"><em>a) T\u00ecm t\u1ecda \u0111\u1ed9 c\u1ee7a \u0111i\u1ec3m D n\u1eb1m tr\u00ean tr\u1ee5c ox sao cho da = dB;<\/em><\/p>\n<p dir=\"ltr\"><em>b) T\u00ednh chu vi c\u1ee7a tam gi\u00e1c OAB?<\/em><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i ph\u00e1p:<\/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\/chu-vi-hinh-tam-giac-3.jpg\" alt=\"\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_toan_tinh_toan_chu_vi_cua_tam_giac_de_em_be_thuc_hanh\"><\/span>B\u00e0i t\u1eadp to\u00e1n t\u00ednh to\u00e1n chu vi c\u1ee7a tam gi\u00e1c \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau khi n\u1eafm b\u1eaft c\u00f4ng th\u1ee9c chu vi c\u1ee7a c\u00e1c h\u00ecnh tam gi\u00e1c, \u0111\u00e2y l\u00e0 b\u1ea3n t\u00f3m t\u1eaft m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng v\u00e0 th\u1ef1c h\u00e0nh hi\u1ec7u qu\u1ea3:<\/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\/chu-vi-hinh-tam-giac-4.jpg\" alt=\"(Ngu\u1ed3n: T\u00f3m t\u1eaft)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_de_giup_tre_hoc_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_ve_chu_vi_cua_tam_giac_mot_cach_hieu_qua\"><\/span>B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc, ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 chu vi c\u1ee7a tam gi\u00e1c m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi tr\u1ebb em l\u1edbp 1, th\u01b0\u1eddng ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 chu vi c\u1ee7a tam gi\u00e1c l\u00e0 c\u01a1 b\u1ea3n, kh\u00f4ng c\u00f3 nhi\u1ec1u to\u00e1n h\u1ecdc kh\u00f3. Nh\u01b0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tr\u1ebb em nh\u1edb, hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng khi gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp ho\u1eb7c th\u1ef1c h\u00e0nh th\u1ef1c t\u1ebf m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, cha m\u1eb9 vui l\u00f2ng tham kh\u1ea3o c\u00e1c m\u1eb9o sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xay_dung_mot_nen_tang_toan_hoc_vung_chac_som_cho_tre_em_voi_toan_hoc_khi\"><\/span>X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc s\u1edbm cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a to\u00e1n h\u1ecdc ti\u1ebfng Anh cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb ti\u1ec3u h\u1ecdc \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi kh\u1ec9.<\/p>\n<p dir=\"ltr\">\u0110\u1eb7c bi\u1ec7t, n\u1ed9i dung b\u00e0i h\u1ecdc c\u1ee7a to\u00e1n h\u1ecdc kh\u1ec9 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n ch\u1eb7t ch\u1ebd theo ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c m\u1edbi m\u00e0 B\u1ed9 Gi\u00e1o d\u1ee5c v\u00e0 \u0110\u00e0o t\u1ea1o cung c\u1ea5p, k\u1ebft h\u1ee3p v\u1edbi Ch\u01b0\u01a1ng tr\u00ecnh To\u00e1n h\u1ecdc Ti\u1ebfng Anh Ti\u00eau chu\u1ea9n Hoa K\u1ef3. \u0110i\u1ec1u n\u00e0y ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p cho h\u1ea7u h\u1ebft c\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng gi\u00e1o d\u1ee5c hi\u1ec7n \u0111\u1ea1i cho cha m\u1eb9 cho tr\u1ebb em.<\/p>\n<p dir=\"ltr\">\u0110\u1ed3ng th\u1eddi, khi tr\u1ebb em theo h\u1ecdc Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math s\u1ebd d\u1ec5 d\u00e0ng theo h\u1ecdc c\u00e1c tr\u01b0\u1eddng qu\u1ed1c t\u1ebf. \u0110\u1ed1i v\u1edbi tr\u1ebb em tr\u01b0\u1eddng c\u00f4ng, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math c\u0169ng l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 ho\u00e0n h\u1ea3o cho tr\u1ebb em \u0111\u01b0\u1ee3c trang b\u1ecb m\u1ed9t n\u1ec1n t\u1ea3ng t\u1ed1t \u0111\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c b\u00e0i t\u1eadp h\u1ecdc hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<p dir=\"ltr\">C\u1ee5 th\u1ec3, v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9, n\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 to\u00e1n h\u1ecdc v\u00e0 to\u00e1n h\u1ecdc, m\u00e0 c\u00f2n gi\u00fap tr\u1ebb hi\u1ec3u b\u1ea3n ch\u1ea5t c\u1ed1t l\u00f5i c\u1ee7a m\u1ed7i b\u00e0i h\u1ecdc. \u1ede \u0111\u00e2y, em b\u00e9 c\u1ee7a b\u1ea1n s\u1ebd hi\u1ec3u l\u01b0\u1ee3ng ch\u1ea5t l\u01b0\u1ee3ng thay v\u00ec ch\u1ec9 h\u1ecdc v\u1eb9t.<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, d\u1ea7n d\u1ea7n s\u1ebd gi\u00fap tr\u1ebb \u0111\u00e0o t\u1ea1o suy ngh\u0129 c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1, c\u0169ng nh\u01b0 h\u00ecnh th\u00e0nh kh\u1ea3 n\u0103ng suy ngh\u0129 logic t\u1eeb khi c\u00f2n nh\u1ecf. Ho\u1eb7c thay v\u00ec h\u1ecdc l\u00fd thuy\u1ebft, t\u00f4i s\u1ebd \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ecdc c\u00e1ch gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf nh\u01b0 xem \u0111\u1ed3ng h\u1ed3, nh\u1eadn d\u1ea1ng h\u00ecnh h\u1ecdc, chu vi h\u00ecnh tam gi\u00e1c qua v\u00ed d\u1ee5, so s\u00e1nh &#8230;<\/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\/chu-vi-hinh-tam-giac-5.jpg\" alt=\"4 C\u1ea5p \u0111\u1ed9 h\u1ecdc to\u00e1n t\u1ea1i Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef Math. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">V\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math s\u1ebd c\u00f3 h\u01a1n 400 b\u00e0i h\u1ecdc, h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c d\u1ef1a tr\u00ean h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc c\u1ee7a 7 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc ch\u00ednh. Th\u00f4ng qua \u0111\u00f3, t\u00f4i s\u1ebd v\u1eeba h\u1ecdc \u0111\u01b0\u1ee3c m\u1ed9t c\u00e1ch h\u1ea1nh ph\u00fac, c\u00f3 \u0111\u01b0\u1ee3c to\u00e1n h\u1ecdc m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean c\u0169ng nh\u01b0 gi\u00fap c\u00e1c b\u00e0i h\u1ecdc \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5, ghi nh\u1edb l\u00e2u h\u01a1n khi t\u00f4i h\u1ecdc v\u1edbi c\u00e1c gi\u00e1c quan:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H\u00ecnh \u1ea3nh &#8211; Quan s\u00e1t, nh\u00ecn.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Nghe &#8211; L\u1eafng nghe.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ch\u1ea1m v\u00e0o &#8211; Ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp (chuy\u1ec3n \u0111\u1ed9ng tinh th\u1ec3, t\u1eadp th\u1ec3 d\u1ee5c th\u00f4). <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">H\u00e3y ch\u1eafc ch\u1eafn r\u1eb1ng, sau khi h\u1ecdc v\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math, t\u00f4i s\u1ebd \u0111\u01b0\u1ee3c ch\u01a1i, h\u1ecdc v\u00e0 h\u1ecdc d\u1ec5 d\u00e0ng. T\u1eeb \u0111\u00f3, t\u00f4i s\u1ebd y\u00eau to\u00e1n v\u00e0 t\u1ef1 nguy\u1ec7n h\u1ecdc h\u1ecfi nhi\u1ec1u h\u01a1n m\u00e0 kh\u00f4ng c\u00f3 cha m\u1eb9 \u0111\u1ec3 nh\u1eafc nh\u1edf.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9, em b\u00e9 v\u1eeba h\u1ecdc to\u00e1n v\u00e0 th\u1ef1c h\u00e0nh h\u1ecdc ti\u1ebfng Anh m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean. \u0110\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c quan tr\u1ecdng \u0111\u1ec3 b\u1ed5 sung r\u1ea5t t\u1ed1t cho vi\u1ec7c h\u1ecdc c\u1ee7a em b\u00e9 trong hi\u1ec7n t\u1ea1i v\u00e0 t\u01b0\u01a1ng lai.<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math cho \u0111i\u1ec7n tho\u1ea1i Android<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng 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=\"Hay_chac_chan_rang_em_be_cua_ban_co_kien_%E2%80%8B%E2%80%8Bthuc_co_ban_khi_hoc_chu_vi_cua_tam_giac\"><\/span>H\u00e3y ch\u1eafc ch\u1eafn r\u1eb1ng em b\u00e9 c\u1ee7a b\u1ea1n c\u00f3 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n khi h\u1ecdc chu vi c\u1ee7a tam gi\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp to\u00e1n h\u1ecdc n\u00f3i chung, chu vi c\u1ee7a tam gi\u00e1c \u0111\u1eb7c bi\u1ec7t \u0111\u00f2i h\u1ecfi tr\u1ebb em ph\u1ea3i l\u00e0m ch\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n. Th\u00f4ng th\u01b0\u1eddng m\u1ed9t tam gi\u00e1c l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i h\u00ecnh tam gi\u00e1c, c\u00f4ng th\u1ee9c chu vi, di\u1ec7n t\u00edch c\u1ee7a m\u1ed7i b\u1ee9c tranh, &#8230;<\/p>\n<p dir=\"ltr\">\u0110\u1eb7c bi\u1ec7t, \u0111\u1ec3 bi\u1ebft em b\u00e9 c\u00f3 th\u00e0nh th\u1ea1o ki\u1ebfn \u200b\u200bth\u1ee9c hay kh\u00f4ng, cha m\u1eb9 n\u00ean ki\u1ec3m tra k\u1ef9 n\u0103ng h\u1ecdc t\u1eadp c\u1ee7a con c\u00e1i h\u1ecd th\u00f4ng qua vi\u1ec7c xem s\u00e1ch v\u00e0 b\u00e0i t\u1eadp c\u1ee7a tr\u1ebb. B\u00ean c\u1ea1nh \u0111\u00f3, l\u00e0m th\u1ebf n\u00e0o c\u00e1c c\u00e2u h\u1ecfi li\u00ean quan nh\u01b0 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n h\u00ecnh tam gi\u00e1c b\u00ean ph\u1ea3i? C\u00e1c v\u00ed d\u1ee5 c\u1ee7a b\u1ea5t k\u1ef3 chu vi h\u00ecnh tam gi\u00e1c l\u00e0 g\u00ec?<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hoc_tap_ket_hop_voi_thuc_hanh_la_khong_the_thieu\"><\/span>H\u1ecdc t\u1eadp k\u1ebft h\u1ee3p v\u1edbi th\u1ef1c h\u00e0nh l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp ho\u1eb7c l\u00e0m vi\u1ec7c kh\u00f4ng th\u1ec3 b\u1ecf qua. B\u1edfi v\u00ec n\u1ebfu b\u1ea1n ch\u1ec9 l\u00e0m ch\u1ee7 l\u00fd thuy\u1ebft m\u00e0 kh\u00f4ng th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean, th\u00ec th\u1eadt d\u1ec5 qu\u00ean, c\u0169ng nh\u01b0 kh\u00f4ng bi\u1ebft c\u00e1ch \u00e1p d\u1ee5ng n\u00f3 trong th\u1ef1c t\u1ebf khi g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u00e0 v\u1ea5n \u0111\u1ec1.<\/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\/chu-vi-hinh-tam-giac-6.jpg\" alt=\"Th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, v\u1edbi ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 chu vi c\u1ee7a tam gi\u00e1c c\u0169ng kh\u00f4ng ngo\u1ea1i l\u1ec7, cha m\u1eb9 c\u0169ng c\u1ea7n ph\u1ea3i l\u00e0m vi\u1ec7c v\u1edbi con c\u00e1i \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp trong s\u00e1ch gi\u00e1o khoa, to\u00e1n h\u1ecdc kh\u1ec9, c\u00e2u h\u1ecfi thi, &#8230; cho \u0111\u1ebfn khi t\u00ecm hi\u1ec3u th\u00eam ki\u1ebfn \u200b\u200bth\u1ee9c m\u1edbi tr\u00ean internet, v\u1edbi b\u1ea1n b\u00e8 trong c\u00e1c nh\u00f3m, t\u1ed5 ch\u1ee9c tr\u00f2 ch\u01a1i, c\u00e2u \u0111\u1ed1, &#8230; t\u1eeb \u0111\u00f3 tr\u1ebb th\u1ef1c h\u00e0nh, th\u1ef1c h\u00e0nh t\u1ed1t h\u01a1n \u0111\u1ec3 ph\u00e1t tri\u1ec3n ki\u1ebfn \u200b\u200bth\u1ee9c v\u00e0 suy ngh\u0129 c\u1ee7a tr\u1ebb em.<\/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\">Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 c\u00e1ch t\u00ednh chu vi c\u1ee7a tam gi\u00e1c. \u0110\u00e2y l\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n quan tr\u1ecdng h\u1ed7 tr\u1ee3 vi\u1ec7c h\u1ecdc t\u1eadp c\u1ee7a tr\u1ebb em \u1edf tr\u01b0\u1eddng, c\u0169ng nh\u01b0 trong m\u1ed9t cu\u1ed9c s\u1ed1ng t\u1ed1t h\u01a1n. V\u00ec v\u1eady, ph\u1ee5 huynh vui l\u00f2ng gi\u1edbi thi\u1ec7u v\u00e0 \u0111\u0103ng k\u00fd \u0111\u1ec3 gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng h\u1ecdc t\u1eadp t\u1ed1t h\u01a1n.<\/p>\n<p>                                    Ngu\u1ed3n tham chi\u1ebfu<\/p>\n<p>Chu vi c\u1ee7a tam gi\u00e1c<\/p>\n<p>https:\/\/byjus.com\/maths\/perimet-of-ch-tiangle\/<\/p>\n<p>Chu vi c\u1ee7a m\u1ed9t tam gi\u00e1c<\/p>\n<p>https:\/\/www.cuemath.com\/meas mua s\u1eafm<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chu vi c\u1ee7a tam gi\u00e1c c\u0169ng s\u1ebd c\u00f3 nhi\u1ec1u c\u00f4ng th\u1ee9c kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i h\u00ecnh tam gi\u00e1c. Do \u0111\u00f3, \u0111\u1ec3 gi\u00fap h\u1ecd n\u1eafm b\u1eaft v\u00e0 ghi nh\u1edb c\u00f4ng th\u1ee9c chu vi c\u1ee7a c\u00e1c lo\u1ea1i h\u00ecnh tam gi\u00e1c tr\u1ecdng l\u01b0\u1ee3ng, \u1ed5n \u0111\u1ecbnh, vu\u00f4ng, nh\u1ecdn, vui l\u00f2ng tham kh\u1ea3o b\u00e0i vi\u1ebft sau. H\u00e0ng tri\u1ec7u&#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-18141","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18141","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=18141"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18141\/revisions"}],"predecessor-version":[{"id":23775,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18141\/revisions\/23775"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=18141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=18141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=18141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}