{"id":20099,"date":"2025-07-07T13:55:06","date_gmt":"2025-07-07T06:55:06","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=20099"},"modified":"2025-07-08T22:05:48","modified_gmt":"2025-07-08T15:05:48","slug":"toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/","title":{"rendered":"To\u00e1n l\u1edbp 2 \u0111\u01b0\u1eddng g\u1ea5p kh\u00fac: H\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i t\u1eadp t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao"},"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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Dong_gap_la_gi\" >D\u00f2ng g\u1ea5p 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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Tam_quan_trong_cua_kien_%E2%80%8B%E2%80%8Bthuc_ve_toan_hoc_cua_Duong_gap_2\" >T\u1ea7m quan tr\u1ecdng c\u1ee7a ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 to\u00e1n h\u1ecdc c\u1ee7a \u0110\u01b0\u1eddng g\u1ea5p 2<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Cach_tinh_do_dai_cua_toan_hoc_lop_2\" >C\u00e1ch t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a to\u00e1n h\u1ecdc l\u1edbp 2<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Cac_hinh_thuc_tap_the_toan_pho_bien_ve_bai_hat\" >C\u00e1c h\u00ecnh th\u1ee9c t\u1eadp th\u1ec3 to\u00e1n ph\u1ed5 bi\u1ebfn v\u1ec1 b\u00e0i h\u00e1t<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Mau_1_Ve_mot_dong_gap_theo_yeu_cau\" >M\u1eabu 1: V\u1ebd m\u1ed9t d\u00f2ng g\u1ea5p theo y\u00eau c\u1ea7u<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Mau_2_Tinh_do_dai_cua_bai_hat\" >M\u1eabu 2: T\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a b\u00e0i h\u00e1t<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Mau_3_Doc_ten_cua_bai_hat_trong_ban_ve\" >M\u1eabu 3: \u0110\u1ecdc t\u00ean c\u1ee7a b\u00e0i h\u00e1t trong b\u1ea3n v\u1ebd<\/a><\/li><\/ul><\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Bi_quyet_de_thuc_hien_cac_bai_tap_tren_dong_gap_lop_hai_mot_cach_hieu_qua\" >B\u00ed quy\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp tr\u00ean d\u00f2ng g\u1ea5p l\u1edbp hai 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-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Xay_dung_mot_nen_tang_toan_hoc_lop_2_cho_tre_em_voi_toan_hoc_khi\" >X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc l\u1edbp 2 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-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Phan_biet_giua_cac_loai_duong_thang_duong_cong_duong_uon_cong\" >Ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i: \u0111\u01b0\u1eddng th\u1eb3ng, \u0111\u01b0\u1eddng cong, \u0111\u01b0\u1eddng u\u1ed1n cong<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Cac_bai_tap_co_nhieu_chieu_dai_cua_duong_de_lam_chu_va_nam_bat_giai_phap\" >C\u00e1c b\u00e0i t\u1eadp c\u00f3 nhi\u1ec1u chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng \u0111\u1ec3 l\u00e0m ch\u1ee7 v\u00e0 n\u1eafm b\u1eaft gi\u1ea3i ph\u00e1p<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Su_dung_may_tinh_cam_tay_de_kiem_tra_cau_tra_loi\" >S\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7m tay \u0111\u1ec3 ki\u1ec3m tra c\u00e2u tr\u1ea3 l\u1eddi<\/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\/toan-lop-2-duong-gap-khuc-huong-dan-giai-bai-tap-tu-co-ban-den-nang-cao\/#Mot_so_bai_tap_ve_dong_gap_lop_hai_de_em_be_thuc_hanh\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 d\u00f2ng g\u1ea5p l\u1edbp hai \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Lo\u1ea1i b\u00e0i t\u1eadp to\u00e1n h\u1ecdc \u1edf l\u1edbp 2 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c b\u00e0i t\u1eadp to\u00e1n m\u00e0 tr\u1ebb n\u00ean l\u00e0m ch\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n. Cha m\u1eb9 n\u00ean ch\u00fa \u00fd \u0111\u1ebfn tr\u1ebb em \u0111\u1ec3 t\u00ecm hi\u1ec3u ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e0y \u0111\u1ec3 ch\u00fang c\u00f3 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n nh\u1ea5t. \u0110\u1ec3 gi\u00fap tr\u1ebb em hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e0y, h\u00e3y \u0111\u1ec3 Kh\u1ec9 kh\u00e1m ph\u00e1 th\u00eam chi ti\u1ebft trong b\u00e0i vi\u1ebft sau.<\/p>\n<p>                                    <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dong_gap_la_gi\"><\/span>D\u00f2ng g\u1ea5p l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u00f2ng g\u1ea5p \u0111\u01b0\u1ee3c hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t d\u00f2ng v\u1edbi nhi\u1ec1u d\u00f2ng li\u00ean ti\u1ebfp v\u00e0 kh\u00f4ng x\u1ebfp h\u00e0ng. Ngo\u00e0i ra, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 d\u00f2ng to\u00e1n h\u1ecdc l\u1edbp 2 \u0111\u1ec3 h\u1ecd hi\u1ec3u: <\/p>\n<ul>\n<li dir=\"ltr\">M\u1ed9t \u0111\u01b0\u1eddng g\u1ea5p th\u01b0\u1eddng c\u00f3 th\u1ec3 c\u00f3 hai ph\u00e2n \u0111o\u1ea1n, ba \u0111\u01b0\u1eddng th\u1eb3ng ho\u1eb7c nhi\u1ec1u ph\u00e2n \u0111o\u1ea1n kh\u00e1c nhau. <\/li>\n<li dir=\"ltr\">D\u00f2ng g\u1ea5p \u0111\u01b0\u1ee3c \u0111\u1ecdc theo th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c \u0111i\u1ec3m ti\u1ebfp theo.<\/li>\n<li dir=\"ltr\">M\u1ed9t \u0111\u01b0\u1eddng g\u1ea5p th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb nhi\u1ec1u \u0111\u01b0\u1eddng th\u1eb3ng kh\u00e1c nhau. V\u00ec m\u1ed9t d\u00f2ng g\u1ea5p ABCD s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb ba \u0111\u01b0\u1eddng th\u1eb3ng AB, BC, CD.<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u00fd thuy\u1ebft v\u1ec1 to\u00e1n h\u1ecdc 2 kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p, nh\u01b0ng tr\u1ebb em c\u1ea7n ph\u1ea3i th\u00e0nh th\u1ea1o \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c h\u1ecdc trong t\u01b0\u01a1ng lai.<\/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\/1-toan-lop-2-duong-gap-khuc.jpg\" alt=\"V\u00ed d\u1ee5 v\u1ec1 b\u00e0i h\u00e1t. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tam_quan_trong_cua_kien_%E2%80%8B%E2%80%8Bthuc_ve_toan_hoc_cua_Duong_gap_2\"><\/span>T\u1ea7m quan tr\u1ecdng c\u1ee7a ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 to\u00e1n h\u1ecdc c\u1ee7a \u0110\u01b0\u1eddng g\u1ea5p 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng quan tr\u1ecdng v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c n\u1eafm b\u1eaft \u0111\u1ec3 sau n\u00e0y, em b\u00e9 s\u1ebd tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p &#8220;m\u1ea5t r\u1ec5&#8221;. Do \u0111\u00f3, ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 con \u0111\u01b0\u1eddng g\u1ea5p Khuc c\u00f3 t\u1ea7m quan tr\u1ecdng l\u1edbn v\u00e0 em b\u00e9 n\u00ean l\u00e0m ch\u1ee7 n\u00f3 ngay t\u1eeb \u0111\u1ea7u.<\/p>\n<p dir=\"ltr\">H\u1ecdc t\u1eadp t\u1ed1t trong b\u00e0i h\u00e1t l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 tr\u1ebb em quen v\u1edbi n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc c\u1ee7a h\u00ecnh h\u1ecdc l\u1edbp 2 &#8211; m\u1ed9t h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc kh\u00f3 kh\u0103n. Ngo\u00e0i ra, h\u1ecdc c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng c\u0169ng t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng suy ngh\u0129 v\u00e0 ph\u00e1t tri\u1ec3n b\u1ed9 n\u00e3o c\u1ee7a em b\u00e9.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_tinh_do_dai_cua_toan_hoc_lop_2\"><\/span>C\u00e1ch t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a to\u00e1n h\u1ecdc l\u1edbp 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chi\u1ec1u d\u00e0i c\u1ee7a \u0111o\u1ea1n \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng t\u1ed5ng \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ec3 t\u1ea1o th\u00e0nh \u0111\u01b0\u1eddng g\u1ea5p \u0111\u00f3. \u0110i\u1ec1u ki\u1ec7n l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5 1: Chi\u1ec1u d\u00e0i c\u1ee7a chi\u1ec1u d\u00e0i c\u1ee7a ABCD u\u1ed1n cong v\u1edbi c\u00e1c ph\u00e9p \u0111o AB = 2cm, BC = 4cm, CD = 5cm.<\/em><\/p>\n<p dir=\"ltr\"><em>H\u01b0\u1edbng d\u1eabn:<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p ABCD l\u00e0: AB + BC + CD = 2 + 4 + 5 = 11 (cm)<\/em><\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5 2: T\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p CDBC v\u1edbi chi\u1ec1u d\u00e0i c\u1ee7a c\u00e1c ph\u00e2n \u0111o\u1ea1n CD = 1dm, db = 5cm, bc = 9cm.<\/em><\/p>\n<p dir=\"ltr\"><em>H\u01b0\u1edbng d\u1eabn:<\/em><\/p>\n<p dir=\"ltr\"><em>Thay \u0111\u1ed5i CD = 1dm = 10cm.<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p CDBC l\u00e0: CD + db + bc = 10 + 5 + 9 = 24 (cm)<\/em><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_hinh_thuc_tap_the_toan_pho_bien_ve_bai_hat\"><\/span>C\u00e1c h\u00ecnh th\u1ee9c t\u1eadp th\u1ec3 to\u00e1n ph\u1ed5 bi\u1ebfn v\u1ec1 b\u00e0i h\u00e1t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u00f2ng g\u1ea5p l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 to\u00e1n h\u1ecdc cho tr\u1ebb em l\u1edbp 2, lo\u1ea1i b\u00e0i t\u1eadp n\u00e0y gi\u00fap tr\u1ebb c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng suy ngh\u0129 v\u1ec1 h\u00ecnh h\u1ecdc v\u00e0 ph\u00e1t tri\u1ec3n tr\u00ed th\u00f4ng minh t\u1ed1t h\u01a1n. Th\u00f4ng th\u01b0\u1eddng, to\u00e1n h\u1ecdc l\u1edbp 2 s\u1ebd c\u00f3 3 lo\u1ea1i b\u00e0i t\u1eadp ch\u00ednh v\u00e0 kh\u1ec9 t\u00ecm ra d\u01b0\u1edbi \u0111\u00e2y!<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Ve_mot_dong_gap_theo_yeu_cau\"><\/span>M\u1eabu 1: V\u1ebd m\u1ed9t d\u00f2ng g\u1ea5p theo y\u00eau c\u1ea7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Tr\u1ebb em ch\u1ec9 c\u1ea7n k\u1ebft n\u1ed1i c\u00e1c \u0111i\u1ec3m kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi nhau trong ph\u00e2n \u0111o\u1ea1n th\u00edch h\u1ee3p \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t \u0111\u01b0\u1eddng g\u1ea5p ho\u00e0n ch\u1ec9nh.<\/p>\n<p dir=\"ltr\">Ki\u1ec3u b\u00e0i t\u1eadp n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n, nh\u01b0ng n\u00f3 c\u00f3 t\u00e1c d\u1ee5ng r\u1ea5t t\u1ed1t trong vi\u1ec7c gi\u00fap tr\u1ebb em quen v\u1edbi c\u00e1c b\u00e0i h\u00e1t v\u00e0 ghi nh\u1edb l\u00e2u h\u01a1n h\u00ecnh th\u1ee9c l\u00fd thuy\u1ebft n\u00e0y.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: K\u1ebft n\u1ed1i ba \u0111i\u1ec3m A, B, C \u0111\u01b0\u1ee3c \u0111\u01b0a ra tr\u01b0\u1edbc nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y, tr\u1ebb em s\u1ebd c\u00f3 m\u1ed9t d\u00f2ng d\u00f2ng g\u1ea5p ABC<\/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\/duong-gap-khuc-toan-lop-2-1a.jpg\" alt=\"\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Tinh_do_dai_cua_bai_hat\"><\/span>M\u1eabu 2: T\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a b\u00e0i h\u00e1t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p ABCD s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng t\u1ed5ng chi\u1ec1u d\u00e0i c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng trong \u0111\u01b0\u1eddng g\u1ea5p \u0111\u00f3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng g\u1ea5p ABC v\u1edbi \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c c\u1ea1nh AB = 5cm, BC = 7cm. T\u00ednh chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p ABC v\u1edbi bao nhi\u00eau x\u0103ng-ti-tet?<\/em><\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: <\/p>\n<p dir=\"ltr\"><em>\u0110\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p ABC \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng: AB + BC = 5 + 7 = 12 (cm)<\/em><\/p>\n<p dir=\"ltr\"><em>V\u00ec v\u1eady, c\u00e2u tr\u1ea3 l\u1eddi l\u00e0: 12cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Doc_ten_cua_bai_hat_trong_ban_ve\"><\/span>M\u1eabu 3: \u0110\u1ecdc t\u00ean c\u1ee7a b\u00e0i h\u00e1t trong b\u1ea3n v\u1ebd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: \u0110\u1ecdc t\u00ean c\u1ee7a c\u00e1c b\u00e0i h\u00e1t b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c \u0111\u1ecdc t\u00ean c\u1ee7a c\u00e1c \u0111\u1ea7u c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng tr\u00ean \u0111\u01b0\u1eddng, sau \u0111\u00f3 so s\u00e1nh c\u00e1c \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u t\u1eeb tr\u00e1i sang ph\u1ea3i ho\u1eb7c ph\u1ea3i sang tr\u00e1i sang \u0111\u01b0\u1eddng b\u00ean tr\u00e1i.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: \u0110\u1ecdc t\u00ean c\u1ee7a d\u00f2ng g\u1ea5p trong h\u00ecnh sau:<\/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\/3-toan-lop-2-duong-gap-khuc.jpg\" alt=\"H\u00ecnh th\u1ee9c \u0111\u1ecdc t\u00ean c\u1ee7a b\u00e0i h\u00e1t l\u00e0 trong b\u1ea3n v\u1ebd. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>H\u01b0\u1edbng d\u1eabn: T\u00ean c\u1ee7a d\u00f2ng g\u1ea5p s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ecdc l\u00e0 ABC ho\u1eb7c CBA.<\/em><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_de_thuc_hien_cac_bai_tap_tren_dong_gap_lop_hai_mot_cach_hieu_qua\"><\/span>B\u00ed quy\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp tr\u00ean d\u00f2ng g\u1ea5p l\u1edbp hai m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">N\u1ebfu b\u1ea1n mu\u1ed1n h\u1ecdc t\u1eadp t\u1ed1t trong c\u00e1c b\u00e0i t\u1eadp to\u00e1n l\u1edbp 2 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 cho b\u00e9, cha m\u1eb9 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ngay m\u1ed9t s\u1ed1 m\u1eb9o \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xay_dung_mot_nen_tang_toan_hoc_lop_2_cho_tre_em_voi_toan_hoc_khi\"><\/span>X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc l\u1edbp 2 cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 l\u1edbp 2 n\u00f3i chung, \u0111\u1ed9 d\u00e0i c\u1ee7a d\u00f2ng g\u1ea5p l\u1edbp hai n\u00f3i ri\u00eang l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n m\u00e0 con b\u1ea1n c\u1ea7n hi\u1ec3u ngay t\u1eeb \u0111\u1ea7u \u0111\u1ec3 gi\u00fap t\u00ecm hi\u1ec3u c\u00e1c h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc hi\u1ec7u qu\u1ea3 h\u01a1n. Do \u0111\u00f3, ph\u1ee5 huynh c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc cho tr\u1ebb em th\u00f4ng qua \u1ee9ng d\u1ee5ng to\u00e1n h\u1ecdc kh\u1ec9.<\/p>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng gi\u1ea3ng d\u1ea1y to\u00e1n h\u1ecdc tr\u1ef1c tuy\u1ebfn m\u00e0 Kh\u1ec9 \u0111\u00e3 ph\u00e1t tri\u1ec3n cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb em ti\u1ec3u h\u1ecdc, n\u1ed9i dung c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c m\u1edbi nh\u1ea5t. Do \u0111\u00f3 gi\u00fap tr\u1ebb x\u00e2y d\u1ef1ng c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u00e0 h\u1ed7 tr\u1ee3 c\u00e1c l\u1edbp h\u1ecdc hi\u1ec7u qu\u1ea3 trong l\u1edbp.<\/p>\n<p dir=\"ltr\">M\u1ed9t t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t khi h\u1ecdc to\u00e1n v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9 l\u00e0 vi\u1ec7c h\u1ecdc qua video, h\u00ecnh \u1ea3nh h\u00e0i h\u01b0\u1edbc s\u1ebd k\u00edch th\u00edch kh\u1ea3 n\u0103ng suy ngh\u0129, ghi nh\u1edb v\u00e0 th\u00fa v\u1ecb h\u01a1n cho tr\u1ebb em. N\u1ed9i dung d\u1ef1a tr\u00ean h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc, \u0111\u01b0\u1ee3c chia th\u00e0nh 4 c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed7i \u0111\u1ed9 tu\u1ed5i v\u00e0 l\u1edbp. Do \u0111\u00f3 gi\u00fap cha m\u1eb9 d\u1ec5 d\u00e0ng ch\u1ecdn c\u1ea5p \u0111\u1ed9 ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi kh\u1ea3 n\u0103ng c\u1ee7a h\u1ecd.<\/p>\n<p dir=\"ltr\">C\u00f9ng v\u1edbi \u0111\u00f3, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math s\u1ebd cung c\u1ea5p h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c nh\u01b0 tr\u00f2 ch\u01a1i, c\u00e2u \u0111\u1ed1, c\u00e2u \u0111\u1ed1 &#8230; \u0110i\u1ec1u n\u00e0y g\u00f3p ph\u1ea7n t\u0103ng s\u1ef1 quan t\u00e2m c\u1ee7a tr\u1ebb em h\u1ecdc to\u00e1n nhi\u1ec1u h\u01a1n tr\u00ean s\u00e1ch, c\u0169ng nh\u01b0 ph\u00e1t tri\u1ec3n t\u01b0 duy &amp; tr\u00ed th\u00f4ng minh trong th\u1eddi k\u1ef3 ph\u00e1t tri\u1ec3n n\u00e3o.<\/p>\n<p dir=\"ltr\">H\u1ee9a h\u1eb9n, v\u1edbi m\u1ed7i kho\u1ea3nh kh\u1eafc h\u1ecdc to\u00e1n v\u1edbi to\u00e1n h\u1ecdc v\u00e0 tr\u1ebb em s\u1ebd l\u00e0 m\u1ed9t ni\u1ec1m vui, \u0111\u1ec3 h\u1ecd s\u1ebd quan t\u00e2m v\u00e0 \u0111am m\u00ea m\u00f4n h\u1ecdc n\u00e0y t\u1eeb khi c\u00f2n nh\u1ecf hi\u1ec7u qu\u1ea3 h\u01a1n. Ph\u1ee5 huynh c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng \u1ee9ng d\u1ee5ng \u0111\u1ec3 tr\u1ea3i nghi\u1ec7m mi\u1ec5n ph\u00ed, chi ti\u1ebft t\u1ea1i:<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math mi\u1ec5n ph\u00ed 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 mi\u1ec5n ph\u00ed cho \u0111i\u1ec7n tho\u1ea1i iOS<\/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=\"Phan_biet_giua_cac_loai_duong_thang_duong_cong_duong_uon_cong\"><\/span>Ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i: \u0111\u01b0\u1eddng th\u1eb3ng, \u0111\u01b0\u1eddng cong, \u0111\u01b0\u1eddng u\u1ed1n cong<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 3 lo\u1ea1i \u0111\u01b0\u1eddng c\u01a1 b\u1ea3n l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp c\u1ee7a tr\u1ebb. Nh\u1eefng lo\u1ea1i \u0111\u01b0\u1eddng n\u00e0y c\u0169ng c\u00f3 nhi\u1ec1u \u0111i\u1ec3m t\u01b0\u01a1ng \u0111\u1ed3ng, v\u00ec v\u1eady ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c d\u1ea1y c\u1ea9n th\u1eadn ngay t\u1eeb \u0111\u1ea7u, s\u1ef1 nh\u1ea7m l\u1eabn r\u1ea5t c\u00f3 th\u1ec3.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng d\u00e2y l\u00e0 m\u1ed9t kho\u1ea3ng c\u00e1ch d\u00e0i v\u00f4 h\u1ea1n, t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng tuy\u1ec7t \u0111\u1ed1i.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01b0\u1eddng cong t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u01b0\u1eddng th\u1eb3ng, nh\u01b0ng nh\u1eefng \u0111i\u1ec3m n\u00e0y tr\u00ean \u0111\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi nhau. C\u00f3 th\u1ec3 n\u00f3i r\u1eb1ng d\u00f2ng l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a \u0111\u01b0\u1eddng cong.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u00f2ng g\u1ea5p l\u00e0 m\u1ed9t d\u00f2ng bao g\u1ed3m nhi\u1ec1u d\u00f2ng li\u00ean ti\u1ebfp v\u00e0 kh\u00f4ng x\u1ebfp h\u00e0ng<\/p>\n<\/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\/4-toan-lop-2-duong-gap-khuc.jpg\" alt=\"Ph\u00e2n bi\u1ec7t gi\u1eefa 3 lo\u1ea1i \u0111\u01b0\u1eddng c\u01a1 b\u1ea3n l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_bai_tap_co_nhieu_chieu_dai_cua_duong_de_lam_chu_va_nam_bat_giai_phap\"><\/span>C\u00e1c b\u00e0i t\u1eadp c\u00f3 nhi\u1ec1u chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng \u0111\u1ec3 l\u00e0m ch\u1ee7 v\u00e0 n\u1eafm b\u1eaft gi\u1ea3i ph\u00e1p<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ngo\u00e0i vi\u1ec7c nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft th\u00f4ng qua s\u00e1ch, th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed9 d\u00e0i c\u1ee7a b\u00e0i h\u00e1t l\u00e0 v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft. B\u1edfi v\u00ec n\u00f3 gi\u00fap tr\u1ebb nh\u1edb l\u00e2u h\u01a1n nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u01b0\u1ee3c d\u1ea1y v\u00e0 th\u00e0nh th\u1ea1o c\u00e1ch gi\u1ea3i quy\u1ebft c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp g\u1ea5p. \u0110\u00e2y l\u00e0 m\u1ed9t l\u01b0u \u00fd c\u1ef1c k\u1ef3 quan tr\u1ecdng v\u00e0 n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng ki\u1ebfn \u200b\u200bth\u1ee9c cho tr\u1ebb em t\u1ed1t h\u01a1n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Su_dung_may_tinh_cam_tay_de_kiem_tra_cau_tra_loi\"><\/span>S\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7m tay \u0111\u1ec3 ki\u1ec3m tra c\u00e2u tr\u1ea3 l\u1eddi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Cha m\u1eb9 n\u00ean s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y t\u00ednh c\u1ea7m tay \u0111\u1ec3 ki\u1ec3m tra c\u00e2u tr\u1ea3 l\u1eddi. H\u1ea7u h\u1ebft c\u00e1c b\u1eadc cha m\u1eb9 \u0111\u1ec1u r\u1ea5t b\u1eadn r\u1ed9n v\u00e0 kh\u00f4ng th\u1ec3 theo d\u00f5i ch\u1eb7t ch\u1ebd \u0111\u1ec3 d\u1ea1y con c\u00e1i c\u1ee7a h\u1ecd. S\u1eed d\u1ee5ng m\u00e1y t\u00ednh s\u1ebd gi\u00fap b\u00e9 ki\u1ec3m tra xem b\u00e0i t\u1eadp ch\u00fang c\u00f3 \u0111\u00fang hay kh\u00f4ng v\u00e0 ti\u1ebft ki\u1ec7m th\u1eddi gian c\u1ee7a cha m\u1eb9.<\/p>\n<p dir=\"ltr\">Xem th\u00eam: L\u00fd thuy\u1ebft v\u00e0 lo\u1ea1i b\u00e0i t\u1eadp to\u00e1n l\u1edbp 2 \u0111\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_ve_dong_gap_lop_hai_de_em_be_thuc_hanh\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 d\u00f2ng g\u1ea5p l\u1edbp hai \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">M\u1ed9t s\u1ed1 lo\u1ea1i b\u00e0i t\u1eadp to\u00e1n h\u1ecdc trong c\u00e1c d\u00f2ng g\u1ea5p c\u01a1 b\u1ea3n l\u1edbp 2 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\/duong-gap-khuc-toan-lop-2-2.jpg\" alt=\"(T\u1ed5ng h\u1ee3p)\" width=\"100%\"><\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #FBEEB8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">Gi\u00fap con b\u1ea1n h\u1ecdc to\u00e1n ti\u1ebfng Anh t\u1ed1t h\u01a1n nh\u1edd ti\u1ebfng n\u01b0\u1edbc ngo\u00e0i 10 tu\u1ed5i \u0111\u01b0\u1ee3c trang b\u1ecb c\u00e2u chuy\u1ec7n kh\u1ec9. H\u01a1n 10 tri\u1ec7u ph\u1ee5 huynh \u1edf 108 qu\u1ed1c gia \u0111\u00e3 tin t\u01b0\u1edfng l\u1ef1a ch\u1ecdn. V\u1eady \u1ee9ng d\u1ee5ng n\u00e0y c\u00f3 g\u00ec?<\/p>\n<p style=\"text-align: center\">\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/timhieungay.png\" alt=\"\" width=\"200\" height=\"41\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p>Th\u00f4ng qua b\u00e0i vi\u1ebft tr\u00ean, hy v\u1ecdng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef \u0111\u00e3 cung c\u1ea5p cho tr\u1ebb ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t v\u1ec1 to\u00e1n h\u1ecdc 2 chi\u1ec1u. Ch\u00fac tr\u1ebb em th\u00e0nh th\u1ea1o ki\u1ebfn \u200b\u200bth\u1ee9c n\u1ec1n t\u1ea3ng n\u00e0y!<\/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>Lo\u1ea1i b\u00e0i t\u1eadp to\u00e1n h\u1ecdc \u1edf l\u1edbp 2 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c b\u00e0i t\u1eadp to\u00e1n m\u00e0 tr\u1ebb n\u00ean l\u00e0m ch\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n. Cha m\u1eb9 n\u00ean ch\u00fa \u00fd \u0111\u1ebfn tr\u1ebb em \u0111\u1ec3 t\u00ecm hi\u1ec3u ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e0y \u0111\u1ec3 ch\u00fang c\u00f3 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n nh\u1ea5t. \u0110\u1ec3 gi\u00fap tr\u1ebb em hi\u1ec3u&#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-20099","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20099","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=20099"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20099\/revisions"}],"predecessor-version":[{"id":25356,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20099\/revisions\/25356"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=20099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=20099"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=20099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}