{"id":38019,"date":"2025-08-01T11:46:00","date_gmt":"2025-08-01T04:46:00","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=38019"},"modified":"2025-08-02T11:06:27","modified_gmt":"2025-08-02T04:06:27","slug":"hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/","title":{"rendered":"H\u00ecnh b\u00ecnh h\u00e0nh: \u0110\u1ecbnh ngh\u0129a, t\u00ednh ch\u1ea5t v\u00e0 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft"},"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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Hinh_binh_hanh_la_gi\" >H\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 g\u00ec?<\/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\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Thuoc_tinh_hinh_binh_hanh\" >Thu\u1ed9c t\u00ednh h\u00ecnh b\u00ecnh h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Dau_hieu_nhan_dang_hinh_binh_hanh\" >D\u1ea5u hi\u1ec7u nh\u1eadn d\u1ea1ng h\u00ecnh b\u00ecnh h\u00e0nh<\/a><\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Cong_thuc_lien_quan_den_hinh_binh_hanh\" >C\u00f4ng th\u1ee9c li\u00ean quan \u0111\u1ebfn h\u00ecnh b\u00ecnh h\u00e0nh<\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Hinh_binh_hanh\" >H\u00ecnh b\u00ecnh h\u00e0nh<\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Khu_vuc_hinh_anh_song_song\" >Khu v\u1ef1c h\u00ecnh \u1ea3nh song song<\/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\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Cac_hinh_thuc_pho_bien_cua_toan_hoc_toan_hoc_la_pho_bien\" >C\u00e1c h\u00ecnh th\u1ee9c ph\u1ed5 bi\u1ebfn c\u1ee7a to\u00e1n h\u1ecdc to\u00e1n h\u1ecdc l\u00e0 ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Mau_1_Cong_thuc_dinh_nghia\" >M\u1eabu 1: C\u00f4ng th\u1ee9c \u0111\u1ecbnh ngh\u0129a<\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Mau_2_Tinh_chu_vi_cua_hinh_binh_hanh\" >M\u1eabu 2: T\u00ednh chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Mau_3_Tinh_dien_tich_hinh_binh_hanh\" >M\u1eabu 3: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Cac_bai_tap_toan_lien_quan_den_hinh_binh_hanh_cho_tre_thuc_hanh\" >C\u00e1c b\u00e0i t\u1eadp to\u00e1n li\u00ean quan \u0111\u1ebfn h\u00ecnh b\u00ecnh h\u00e0nh cho tr\u1ebb 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-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Bi_quyet_de_giup_tre_hoc_ghi_nho_kien_thuc_hinh_binh_hanh_hieu_qua\" >B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc, ghi nh\u1edb ki\u1ebfn th\u1ee9c h\u00ecnh b\u00ecnh h\u00e0nh 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-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Hoc_toan_thu_vi_voi_tre_em_voi_toan_hoc_khi\" >H\u1ecdc to\u00e1n th\u00fa v\u1ecb v\u1edbi 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-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Giup_be_cua_ban_thanh_thao_ly_thuyet_ve_hinh_binh_hanh\" >Gi\u00fap b\u00e9 c\u1ee7a b\u1ea1n th\u00e0nh th\u1ea1o l\u00fd thuy\u1ebft v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh<\/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-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Thuc_hanh_tre_em_thuong_xuyen_la_dieu_can_thiet\" >Th\u1ef1c h\u00e0nh tr\u1ebb em th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ckconitsha.com\/vn\/hinh-binh-hanh-dinh-nghia-tinh-chat-va-dau-hieu-nhan-biet\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>H\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh h\u1ecdc quen thu\u1ed9c, kh\u00f4ng ch\u1ec9 xu\u1ea5t hi\u1ec7n trong to\u00e1n h\u1ecdc m\u00e0 c\u00f2n trong cu\u1ed9c s\u1ed1ng th\u1ef1c, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc n\u00e0y, \u0111\u1ec3 h\u1ed7 tr\u1ee3 h\u1ecdc t\u1eadp \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t, nh\u1eefng \u0111i\u1ec1u sau \u0111\u00e2y l\u00e0 th\u00f4ng tin chi ti\u1ebft.<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480_(1).png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hinh_binh_hanh_la_gi\"><\/span>H\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">H\u00ecnh d\u1ea1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1ed9t t\u1ee9 gi\u00e1c \u0111\u1eb7c bi\u1ec7t, \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi hai c\u1eb7p c\u1ea1nh th\u1eb3ng song song. \u0110\u1ed3ng th\u1eddi, \u0111\u00e2y l\u00e0 m\u1ed9t h\u00ecnh h\u1ecdc \u0111\u1eb7c bi\u1ec7t v\u1edbi 4 g\u00f3c v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t t\u01b0\u01a1ng t\u1ef1 nh\u01b0 h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 h\u00ecnh thang.<\/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-binh-hanh-1.jpg\" alt=\"\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh b\u00ecnh h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuoc_tinh_hinh_binh_hanh\"><\/span>Thu\u1ed9c t\u00ednh h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c c\u1ea1nh song song v\u1edbi nhau v\u00e0 b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c g\u00f3c b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai \u0111\u01b0\u1eddng ch\u00e9o giao nhau \u1edf \u0111i\u1ec3m gi\u1eefa c\u1ee7a m\u1ed7i d\u00f2ng.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dau_hieu_nhan_dang_hinh_binh_hanh\"><\/span>D\u1ea5u hi\u1ec7u nh\u1eadn d\u1ea1ng h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00ecnh b\u00ecnh h\u00e0nh trong nhi\u1ec1u h\u00ecnh h\u1ecdc kh\u00e1c, ch\u00fang ta c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/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-binh-hanh-2.jpg\" alt=\"M\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u nh\u1eadn d\u1ea1ng h\u00ecnh b\u00ecnh h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c h\u00ecnh t\u1ee9 gi\u00e1c v\u1edbi c\u00e1c c\u1ea1nh \u0111\u1ed1i di\u1ec7n song song l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh. V\u00ed d\u1ee5: ABCD t\u1ee9 gi\u00e1c c\u00f3 AB \/\/ CD v\u00e0 AD \/\/ CB, ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c h\u00ecnh t\u1ee9 gi\u00e1c v\u1edbi c\u00e1c c\u1ea1nh \u0111\u1ed1i di\u1ec7n b\u1eb1ng nhau l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh. V\u00ed d\u1ee5: ABCD t\u1ee9 gi\u00e1c c\u00f3 AB = CD, AD = BC, ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u1ee9 gi\u00e1c c\u00f3 hai c\u1ea1nh song song v\u00e0 b\u1eb1ng nhau l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh. V\u00ed d\u1ee5: ABCD t\u1ee9 gi\u00e1c c\u00f3 AB \/\/ CD v\u00e0 AB = CD ho\u1eb7c AD \/\/ BC v\u00e0 AD = BC, ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c h\u00ecnh t\u1ee9 gi\u00e1c v\u1edbi c\u00e1c g\u00f3c \u0111\u1ed1i di\u1ec7n b\u1eb1ng nhau l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh. V\u00ed d\u1ee5: ABCD t\u1ee9 gi\u00e1c c\u00f3, ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u1ee9 gi\u00e1c c\u00f3 hai \u0111\u01b0\u1eddng ch\u00e9o giao nhau \u1edf \u0111i\u1ec3m gi\u1eefa c\u1ee7a m\u1ed7i d\u00f2ng l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh. V\u00ed d\u1ee5: ABCD t\u1ee9 gi\u00e1c c\u00f3 AC c\u1eaft BD t\u1ea1i O. N\u1ebfu OA = OC, OB = OD th\u00ec ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_lien_quan_den_hinh_binh_hanh\"><\/span>C\u00f4ng th\u1ee9c li\u00ean quan \u0111\u1ebfn h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4, h\u1ecd s\u1ebd b\u1eaft \u0111\u1ea7u l\u00e0m quen v\u1edbi h\u00ecnh h\u1ecdc n\u00e0y, k\u00e8m theo c\u00e1c c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u00f3 li\u00ean quan nh\u01b0 sau:<\/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-binh-hanh-3.jpg\" alt=\"Trong h\u00ecnh b\u00ecnh h\u00e0nh, s\u1ebd c\u00f3 m\u1ed9t c\u00f4ng th\u1ee9c cho chu vi v\u00e0 di\u1ec7n t\u00edch. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hinh_binh_hanh\"><\/span>H\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Chu vi h\u00ecnh b\u00ecnh h\u00e0nh s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng t\u1ed5ng chi\u1ec1u d\u00e0i c\u1ee7a 4 c\u1ea1nh xung quanh h\u00ecnh \u1ea3nh, ho\u1eb7c b\u1eb1ng 2 l\u1ea7n t\u1ed5ng c\u1ee7a b\u1ea5t k\u1ef3 b\u00ean n\u00e0o.<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c c\u1ee5 th\u1ec3 nh\u01b0 sau: C = 2 x (A+B)<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">C l\u00e0 chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh.<\/li>\n<li dir=\"ltr\">A v\u00e0 B l\u00e0 c\u1ea1nh li\u1ec1n k\u1ec1 c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh.<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Khu_vuc_hinh_anh_song_song\"><\/span>Khu v\u1ef1c h\u00ecnh \u1ea3nh song song<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u00f9ng h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u01b0\u1ee3c t\u00ednh theo \u0111\u1ed9 l\u1edbn c\u1ee7a b\u1ec1 m\u1eb7t, \u0111\u00f3 l\u00e0 m\u1eb7t ph\u1eb3ng m\u00e0 m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y h\u00ecnh \u1ea3nh. Ch\u00fang \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng s\u1ea3n ph\u1ea9m c\u1ee7a \u0111\u00e1y chi\u1ec1u cao. C\u1ee5 th\u1ec3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = ah<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">S l\u00e0 m\u1ed9t khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh<\/li>\n<li dir=\"ltr\">A l\u00e0 \u0111\u00e1y c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/li>\n<li dir=\"ltr\">H l\u00e0 chi\u1ec1u cao k\u1ebft n\u1ed1i t\u1eeb tr\u00ean c\u00f9ng v\u1edbi \u0111\u00e1y c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh.<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_hinh_thuc_pho_bien_cua_toan_hoc_toan_hoc_la_pho_bien\"><\/span>C\u00e1c h\u00ecnh th\u1ee9c ph\u1ed5 bi\u1ebfn c\u1ee7a to\u00e1n h\u1ecdc to\u00e1n h\u1ecdc l\u00e0 ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc l\u1edbp 4, ch\u00fang s\u1ebd quen thu\u1ed9c v\u1edbi c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp c\u01a1 b\u1ea3n sau:<\/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-binh-hanh-4.jpg\" alt=\"C\u00f3 nhi\u1ec1u lo\u1ea1i b\u00e0i t\u1eadp kh\u00e1c nhau li\u00ean quan \u0111\u1ebfn h\u00ecnh b\u00ecnh h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Cong_thuc_dinh_nghia\"><\/span>M\u1eabu 1: C\u00f4ng th\u1ee9c \u0111\u1ecbnh ngh\u0129a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i ph\u00e1p: To\u00e1n h\u1ecdc n\u00e0y s\u1ebd y\u00eau c\u1ea7u tr\u1ebb l\u00e0m ch\u1ee7 l\u00fd thuy\u1ebft nh\u01b0 kh\u00e1i ni\u1ec7m, thu\u1ed9c t\u00ednh, d\u1ea5u hi\u1ec7u nh\u1eadn th\u1ee9c \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0a ra c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Trong t\u1ee9 gi\u00e1c sau, h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 g\u00ec? T\u1ea1i sao?<\/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-binh-hanh-5.jpg\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>H\u01b0\u1edbng d\u1eabn:<\/em><\/p>\n<p dir=\"ltr\"><em>A) ABCD t\u1ee9 gi\u00e1c c\u00f3 AB = CD, BC = AD SO ABCD l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh.<\/em><\/p>\n<p dir=\"ltr\"><em>b) ABCD t\u1ee9 gi\u00e1c c\u00f3 ABCD l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh.<\/em><\/p>\n<p dir=\"ltr\"><em>C) ABCD t\u1ee9 gi\u00e1c n\u00ean AB v\u00e0 CD kh\u00f4ng song song. Suy lu\u1eadn, ABCD kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh<\/em><\/p>\n<p dir=\"ltr\"><em>D) ABCD t\u1ee9 gi\u00e1c c\u00f3 hai \u0111\u01b0\u1eddng ch\u00e9o, AC v\u00e0 BD. AC \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i BD t\u1ea1i O. Ch\u00fang t\u00f4i c\u00f3: OA = OC, OB = OD SO ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/em><\/p>\n<p dir=\"ltr\"><em>E) ABCD t\u1ee9 gi\u00e1c ph\u1ea3i AB song song v\u1edbi CD v\u00e0 AB = Cd Infer ABCD l\u00e0 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Tinh_chu_vi_cua_hinh_binh_hanh\"><\/span>M\u1eabu 2: T\u00ednh chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: H\u1ecd s\u1ebd \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c C = 2 x (A+B) \u0111\u1ec3 c\u00f3 th\u1ec3 t\u00ednh chu vi c\u1ee7a h\u00ecnh \u1ea3nh ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho ABCD h\u00ecnh b\u00ecnh h\u00e0nh v\u1edbi hai c\u1ea1nh A v\u00e0 B th\u1eddi gian l\u00e0 3 cm v\u00e0 5 cm. Bao nhi\u00eau chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh ABCD?<\/em><\/p>\n<p dir=\"ltr\"><em>Tr\u1ea3 l\u1eddi<\/em><\/p>\n<p dir=\"ltr\"><em>Chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh ABCD l\u00e0:<\/em><\/p>\n<p dir=\"ltr\"><em>C = (a + b) x 2 = (3 + 5) x 2 = 16 cm<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Tinh_dien_tich_hinh_binh_hanh\"><\/span>M\u1eabu 3: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i s\u1ebd \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh \u1ea3nh l\u00e0 s = ah \u0111\u1ec3 gi\u1ea3i to\u00e1n ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: H\u00ecnh b\u00ecnh h\u00e0nh ABCD c\u00f3 chi\u1ec1u cao d\u01b0\u1edbi c\u00f9ng c\u1ee7a CD = 5 cm v\u00e0 chi\u1ec1u cao \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i t\u1eeb \u0111\u1ec9nh A \u0111\u1ebfn \u0111\u00e1y CD l\u00e0 3 cm. T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh ABCD?<\/em><\/p>\n<p dir=\"ltr\"><em>Tr\u1ea3 l\u1eddi<\/em><\/p>\n<p dir=\"ltr\"><em>Khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0:<\/em><\/p>\n<p dir=\"ltr\"><em>S = AH = 5 x 3 = 15 cm2<\/em><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_bai_tap_toan_lien_quan_den_hinh_binh_hanh_cho_tre_thuc_hanh\"><\/span>C\u00e1c b\u00e0i t\u1eadp to\u00e1n li\u00ean quan \u0111\u1ebfn h\u00ecnh b\u00ecnh h\u00e0nh cho tr\u1ebb th\u1ef1c h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u1ec3 tr\u1ebb th\u1ef1c h\u00e0nh c\u00f9ng nhau:<\/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-binh-hanh-8.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_thuc_hinh_binh_hanh_hieu_qua\"><\/span>B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc, ghi nh\u1edb ki\u1ebfn th\u1ee9c h\u00ecnh b\u00ecnh h\u00e0nh hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 gi\u00fap h\u1ecdc sinh h\u1ecdc to\u00e1n to\u00e1n l\u1edbp 4 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 m\u1eb9o \u0111\u1ec3 \u00e1p d\u1ee5ng:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hoc_toan_thu_vi_voi_tre_em_voi_toan_hoc_khi\"><\/span>H\u1ecdc to\u00e1n th\u00fa v\u1ecb v\u1edbi tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">To\u00e1n kh\u1ec9 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a to\u00e1n h\u1ecdc t\u01b0 duy ti\u1ebfng Anh tr\u1ef1c tuy\u1ebfn cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb em ti\u1ec3u h\u1ecdc \u0111\u01b0\u1ee3c h\u00e0ng tri\u1ec7u ph\u1ee5 huynh tin t\u01b0\u1edfng. V\u1edbi n\u1ed9i dung \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n d\u1ef1a tr\u00ean ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c m\u1edbi nh\u1ea5t c\u1ee7a B\u1ed9 Gi\u00e1o d\u1ee5c v\u00e0 \u0110\u00e0o t\u1ea1o, \u0111\u1ea3m b\u1ea3o c\u1ea3 hai tr\u1ebb h\u1ed7 tr\u1ee3 n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 suy ngh\u0129 to\u00e1n h\u1ecdc v\u00e0 h\u1ed7 tr\u1ee3 nghi\u00ean c\u1ee9u v\u1ec1 tr\u01b0\u1eddng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/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-binh-hanh-6.jpg\" alt=\"H\u1ecdc to\u00e1n b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00edch c\u1ef1c v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">M\u1ed9t t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t khi tr\u1ebb h\u1ecdc to\u00e1n v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y. \u1ee8ng d\u1ee5ng n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 vi\u1ec7c d\u1ea1y tr\u1ebb h\u1ecdc to\u00e1n d\u1ef1a tr\u00ean 3 ph\u01b0\u01a1ng ph\u00e1p, bao g\u1ed3m:<\/p>\n<ul>\n<li dir=\"ltr\">\u00c1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y t\u00edch c\u1ef1c: K\u00edch th\u00edch s\u1ef1 s\u00e1ng t\u1ea1o, tr\u1ebb em ch\u1ee7 \u0111\u1ed9ng \u0111\u1eb7t c\u00e2u h\u1ecfi \u0111\u1ec3 hi\u1ec3u g\u1ed1c r\u1ec5 c\u1ee7a v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong to\u00e1n h\u1ecdc.<\/li>\n<li dir=\"ltr\">H\u1ecdc th\u00f4ng qua tr\u00f2 ch\u01a1i: Ch\u01a1i v\u00e0 h\u1ecdc t\u1eadp nh\u01b0ng hi\u1ec7u qu\u1ea3. T\u00f4i quan t\u00e2m, t\u1ef1 nguy\u1ec7n h\u1ecdc m\u00e0 kh\u00f4ng c\u00f3 l\u1eddi nh\u1eafc c\u1ee7a cha m\u1eb9.<\/li>\n<li dir=\"ltr\">Nghi\u00ean c\u1ee9u v\u1edbi c\u00e1c b\u00e0i t\u1eadp b\u1ed5 sung: Gi\u00fap con b\u1ea1n ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng v\u1eadn \u0111\u1ed9ng b\u00e1n v\u00e0 \u0111\u1ed9ng c\u01a1 th\u00f4 th\u00f4ng qua vi\u1ec7c gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u1ee5 th\u1ec3, t\u1ea5t c\u1ea3 c\u00e1c b\u00e0i h\u1ecdc v\u1ec1 to\u00e1n h\u1ecdc kh\u1ec9 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc kh\u00e1c nhau t\u1eeb thi\u1ebft b\u1ecb \u0111\u1ebfn h\u00ecnh h\u1ecdc, \u0111o l\u01b0\u1eddng, &#8230; t\u1ea5t c\u1ea3 \u0111\u01b0\u1ee3c chia th\u00e0nh 4 c\u1ea5p \u0111\u1ed9 t\u1eeb d\u1ec5 d\u00e0ng \u0111\u1ebfn kh\u00f3 kh\u0103n, v\u00ec v\u1eady ph\u1ee5 huynh d\u1ef1a v\u00e0o tu\u1ed5i v\u00e0 kh\u1ea3 n\u0103ng h\u1ecdc t\u1eadp c\u1ee7a h\u1ecd \u0111\u1ec3 ch\u1ecdn \u0111\u00fang b\u00e0i h\u1ecdc.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math c\u0169ng h\u1ed7 tr\u1ee3 gi\u1ea3ng d\u1ea1y to\u00e1n b\u1eb1ng ti\u1ebfng Anh, do \u0111\u00f3 gi\u00fap tr\u1ebb h\u1ecdc v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c ngo\u1ea1i ng\u1eef m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean. Do \u0111\u00f3, em b\u00e9 v\u1eeba h\u1ecdc to\u00e1n v\u00e0 v\u1eeba h\u1ecdc ti\u1ebfng Anh ch\u1ec9 v\u1edbi kho\u1ea3ng 2k\/ng\u00e0y. \u0110\u1eebng ng\u1ea7n ng\u1ea1i m\u00e0 kh\u00f4ng \u0111\u0103ng k\u00fd ngay l\u1eadp t\u1ee9c.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/button_dang-ky-ngay-1.png\" alt=\"\" width=\"185\" height=\"25\"><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Giup_be_cua_ban_thanh_thao_ly_thuyet_ve_hinh_binh_hanh\"><\/span>Gi\u00fap b\u00e9 c\u1ee7a b\u1ea1n th\u00e0nh th\u1ea1o l\u00fd thuy\u1ebft v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u1ea3i quy\u1ebft b\u00e0i t\u1eadp, n\u00f3 \u0111\u00f2i h\u1ecfi tr\u1ebb em ph\u1ea3i l\u00e0m ch\u1ee7 l\u00fd thuy\u1ebft v\u1ec1 h\u00ecnh h\u1ecdc n\u00e0y. V\u00ec v\u1eady, cha m\u1eb9 c\u1ea7n ph\u00e2n t\u00edch v\u00e0 h\u01b0\u1edbng d\u1eabn con c\u00e1i h\u1ecd c\u00f3 ki\u1ebfn th\u1ee9c v\u1ec1 b\u1ee9c tranh nh\u01b0 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb <em>Kh\u00e1i ni\u1ec7m, thu\u1ed9c t\u00ednh, d\u1ea5u hi\u1ec7u nh\u1eadn d\u1ea1ng, c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n, &#8230;<\/em> Ch\u1ec9 khi n\u1eafm b\u1eaft ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n n\u00e0y, h\u1ecd m\u1edbi d\u1ec5 d\u00e0ng chinh ph\u1ee5c c\u00e1c b\u00e0i t\u1eadp \u0111\u01b0\u1ee3c \u0111\u01b0a ra.<\/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-binh-hanh-7.jpg\" alt=\"Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuc_hanh_tre_em_thuong_xuyen_la_dieu_can_thiet\"><\/span>Th\u1ef1c h\u00e0nh tr\u1ebb em th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Sau khi em b\u00e9 \u0111\u00e3 th\u00e0nh th\u1ea1o l\u00fd thuy\u1ebft h\u00ecnh b\u00ecnh h\u00e0nh, cha m\u1eb9 c\u1ea7n t\u1ea1o c\u01a1 h\u1ed9i cho con c\u00e1i h\u1ecd th\u1ef1c h\u00e0nh \u00e1p d\u1ee5ng ki\u1ebfn th\u1ee9c m\u00e0 h\u1ecd \u0111\u00e3 h\u1ecdc \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp, ch\u01a1i tr\u00f2 ch\u01a1i, \u00e1p d\u1ee5ng trong th\u1ef1c t\u1ebf, th\u1ef1c h\u00e0nh c\u00e2u h\u1ecfi ki\u1ec3m tra &#8230;. khi th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean, n\u00f3 s\u1ebd t\u1ea1o c\u01a1 h\u1ed9i cho tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy, s\u00e1ng t\u1ea1o v\u00e0 th\u00fa v\u1ecb h\u01a1n khi h\u1ecdc to\u00e1n thay v\u00ec h\u1ecdc l\u00fd thuy\u1ebft trong s\u00e1ch.<\/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 ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh chi ti\u1ebft trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4. Hy v\u1ecdng r\u1eb1ng \u0111\u00e2y s\u1ebd l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng quan tr\u1ecdng cho tr\u1ebb em \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c h\u1ecdc c\u1ee7a ch\u00fang \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<p>                                    Ngu\u1ed3n tham chi\u1ebfu<\/p>\n<p>H\u00ecnh b\u00ecnh h\u00e0nh<\/p>\n<p>https:\/\/byjus.com\/maths\/paromalogram\/<\/p>\n<p>H\u00ecnh b\u00ecnh h\u00e0nh &#8211; \u0110\u1ecbnh ngh\u0129a v\u1edbi c\u00e1c v\u00ed d\u1ee5<\/p>\n<p>https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/paralogram<\/p>\n<p>H\u00ecnh b\u00ecnh h\u00e0nh<\/p>\n<p>https:\/\/en.wikipedia.org\/wiki\/ParalLoGram<\/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>H\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh h\u1ecdc quen thu\u1ed9c, kh\u00f4ng ch\u1ec9 xu\u1ea5t hi\u1ec7n trong to\u00e1n h\u1ecdc m\u00e0 c\u00f2n trong cu\u1ed9c s\u1ed1ng th\u1ef1c, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc n\u00e0y, \u0111\u1ec3 h\u1ed7 tr\u1ee3 h\u1ecdc t\u1eadp \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t, nh\u1eefng \u0111i\u1ec1u sau \u0111\u00e2y&#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-38019","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/38019","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=38019"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/38019\/revisions"}],"predecessor-version":[{"id":38368,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/38019\/revisions\/38368"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=38019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=38019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=38019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}