{"id":17070,"date":"2025-07-04T12:50:05","date_gmt":"2025-07-04T05:50:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=17070"},"modified":"2025-07-05T18:35:16","modified_gmt":"2025-07-05T11:35:16","slug":"goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/","title":{"rendered":"G\u00f3c t\u00f9: Kh\u00e1i ni\u1ec7m, \u0111\u1eb7c \u0111i\u1ec3m t\u00ednh ch\u1ea5t, c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp &amp; b\u00ed quy\u1ebft h\u1ecdc hay"},"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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Khai_niem_ve_goc_nha_tu_la_gi\" >Kh\u00e1i ni\u1ec7m v\u1ec1 g\u00f3c nh\u00e0 t\u00f9 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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Dac_diem_thuoc_tinh_cua_cac_goc_sac_net\" >\u0110\u1eb7c \u0111i\u1ec3m thu\u1ed9c t\u00ednh c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t<\/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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Cach_xac_dinh_gia_tri_goc_cua_goc_nha_tu\" >C\u00e1ch x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c c\u1ee7a g\u00f3c nh\u00e0 t\u00f9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Ap_dung_cac_thuoc_tinh_cua_goc\" >\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c<\/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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Su_dung_mot_thuoc_do_goc_hoac_ello\" >S\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc \u0111o g\u00f3c ho\u1eb7c ello<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Cac_dinh_dang_toan_cua_goc_nha_tu_chung\" >C\u00e1c \u0111\u1ecbnh d\u1ea1ng to\u00e1n c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 chung<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Mau_1_Xac_dinh_goc_voi_cac_goc_khac\" >M\u1eabu 1: X\u00e1c \u0111\u1ecbnh g\u00f3c v\u1edbi c\u00e1c g\u00f3c kh\u00e1c<\/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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Mau_2_Viet_ten_cua_cac_goc_nha_tu_trong_buc_tranh_da_cho\" >M\u1eabu 2: Vi\u1ebft t\u00ean c\u1ee7a c\u00e1c g\u00f3c nh\u00e0 t\u00f9 trong b\u1ee9c tranh \u0111\u00e3 cho<\/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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Mau_3_Ve_hinh_anh_tuong_ung_voi_goc\" >M\u1eabu 3: V\u1ebd h\u00ecnh \u1ea3nh t\u01b0\u01a1ng \u1ee9ng v\u1edbi g\u00f3c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Mot_so_bai_tap_ve_goc_de_em_be_tap_luyen\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 g\u00f3c \u0111\u1ec3 em b\u00e9 t\u1eadp luy\u1ec7n<\/a><\/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\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Bi_quyet_hoc_tap_va_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_goc_hieu_qua\" >B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c g\u00f3c 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-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Tao_tinh_yeu_toan_hoc_cho_tre_em_voi_toan_hoc_khi\" >T\u1ea1o t\u00ecnh y\u00eau to\u00e1n h\u1ecdc 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-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Lay_mot_vi_du_ve_mot_goc_nha_tu_thong_qua_thuc_hanh_tro_choi\" >L\u1ea5y m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 m\u1ed9t g\u00f3c nh\u00e0 t\u00f9 th\u00f4ng qua th\u1ef1c h\u00e0nh, 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-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Thuc_hanh_voi_em_be_cua_ban_thuc_hanh_thuong_xuyen\" >Th\u1ef1c h\u00e0nh v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n, th\u1ef1c h\u00e0nh 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-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-tu-khai-niem-dac-diem-tinh-chat-cac-dang-bai-tap-bi-quyet-hoc-hay\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>G\u00f3c nh\u00e0 t\u00f9 l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n c\u1ee7a h\u1ecdc sinh l\u1edbp 4 s\u1ebd h\u1ecdc. \u0110\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t g\u00f3c \u0111\u1eb7c bi\u1ec7t trong h\u00ecnh h\u1ecdc, n\u1ebfu n\u00f3 kh\u00f4ng ch\u1eafc ch\u1eafn s\u1ebd b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi g\u00f3c kh\u00e1c, d\u1eabn \u0111\u1ebfn b\u00e0i t\u1eadp sai. V\u00ec v\u1eady, \u0111\u1ec3 hi\u1ec3u g\u00f3c l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u1ea1i g\u00f3c n\u00e0y, h\u00e3y \u0111\u1ec3 kh\u1ec9 kh\u00e1m ph\u00e1 r\u00f5 r\u00e0ng h\u01a1n.<\/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=\"Khai_niem_ve_goc_nha_tu_la_gi\"><\/span>Kh\u00e1i ni\u1ec7m v\u1ec1 g\u00f3c nh\u00e0 t\u00f9 l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">N\u1ebfu b\u00e0i h\u1ecdc tr\u01b0\u1edbc, ch\u00fang ta \u0111\u00e3 bi\u1ebft g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec? G\u00f3c nh\u00e0 t\u00f9 c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng g\u00f3c \u0111\u1eb7c bi\u1ec7t trong h\u00ecnh h\u1ecdc m\u00e0 khi h\u1ecdc to\u00e1n, h\u1ecd c\u0169ng ph\u1ea3i hi\u1ec3u.<\/p>\n<p dir=\"ltr\">G\u00f3c nh\u00e0 t\u00f9 l\u00e0 g\u00ec? C\u00f3 bao nhi\u00eau \u0111\u1ed9 trong t\u00f9? V\u1ec1 b\u1ea3n ch\u1ea5t, con c\u00f3c l\u00e0 g\u00f3c \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb hai \u0111\u01b0\u1eddng th\u1eb3ng ho\u1eb7c 2 \u0111\u01b0\u1eddng th\u1eb3ng trong c\u00f9ng m\u1ed9t m\u1eb7t ph\u1eb3ng giao nhau m\u1ed9t g\u00f3c l\u1edbn h\u01a1n 90 \u00b0. C\u0169ng nh\u01b0 gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 trong tam gi\u00e1c l\u1edbn h\u01a1n g\u00f3c vu\u00f4ng v\u00e0 nh\u1ecf h\u01a1n g\u00f3c trong c\u1ee7a tam gi\u00e1c l\u00e0 180 \u00b0.<\/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\/goc-tu-1.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 trong h\u00ecnh h\u1ecdc. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dac_diem_thuoc_tinh_cua_cac_goc_sac_net\"><\/span>\u0110\u1eb7c \u0111i\u1ec3m thu\u1ed9c t\u00ednh c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Theo \u0111\u1ecbnh ngh\u0129a c\u1ee7a g\u00f3c, th\u01b0\u1eddng s\u1ebd c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">G\u00f3c t\u1eeb t\u00ednh lu\u00f4n nh\u1ecf h\u01a1n 180 \u00b0 v\u00e0 l\u1edbn h\u01a1n g\u00f3c vu\u00f4ng: 90 \u00b0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Trong h\u00ecnh h\u1ecdc, kh\u00f4ng c\u00f3 h\u00ecnh h\u1ecdc ph\u1eb3ng t\u1ed3n t\u1ea1i m\u1ed9t g\u00f3c nh\u00e0 t\u00f9.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_xac_dinh_gia_tri_goc_cua_goc_nha_tu\"><\/span>C\u00e1ch x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c c\u1ee7a g\u00f3c nh\u00e0 t\u00f9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh xem gi\u00e1 tr\u1ecb g\u00f3c kh\u00f4ng ph\u1ea3i l\u00e0 g\u00f3c, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o c\u00e1c c\u00e1ch 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\/goc-tu-2.jpg\" alt=\"K\u1ebft h\u1ee3p c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 bi\u1ec7n ph\u00e1p \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c nh\u00e0 t\u00f9. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_cac_thuoc_tinh_cua_goc\"><\/span>\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">D\u1ef1a tr\u00ean c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a g\u00f3c nh\u00e0 t\u00f9, n\u1ebfu m\u1ecdi ng\u01b0\u1eddi th\u1ea5y r\u1eb1ng g\u00f3c c\u00f3 g\u00f3c l\u1edbn h\u01a1n g\u00f3c vu\u00f4ng 90 \u00b0 nh\u01b0ng nh\u1ecf h\u01a1n g\u00f3c ph\u1eb3ng 180 \u00b0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u1eb1ng \u0111\u00f3 l\u00e0 g\u00f3c nh\u00e0 t\u00f9.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Su_dung_mot_thuoc_do_goc_hoac_ello\"><\/span>S\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc \u0111o g\u00f3c ho\u1eb7c ello<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Bi\u1ec7n ph\u00e1p Eke ho\u1eb7c G\u00f3c l\u00e0 c\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c ch\u00ednh x\u00e1c nh\u1ea5t b\u1eb1ng bao nhi\u00eau \u0111\u1ed9. Ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc \u0111o \u0111\u1ec3 \u0111o gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c, n\u1ebfu l\u1edbn h\u01a1n 90 \u00b0 v\u00e0 d\u01b0\u1edbi 180 \u00b0 l\u00e0 g\u00f3c nh\u00e0 t\u00f9.<\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_dinh_dang_toan_cua_goc_nha_tu_chung\"><\/span>C\u00e1c \u0111\u1ecbnh d\u1ea1ng to\u00e1n c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 chung<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n, tr\u1ebb em s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m quen v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn g\u00f3c nh\u01b0 sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Xac_dinh_goc_voi_cac_goc_khac\"><\/span>M\u1eabu 1: X\u00e1c \u0111\u1ecbnh g\u00f3c v\u1edbi c\u00e1c g\u00f3c kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i s\u1ebd d\u1ef1a v\u00e0o b\u1ea3n ch\u1ea5t v\u00e0 \u0111\u1ecbnh ngh\u0129a c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c g\u00f3c kh\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Trong c\u00e1c h\u00ecnh \u1ea3nh sau \u0111\u00e2y, g\u00f3c nh\u00e0 t\u00f9 l\u00e0 g\u00ec?<\/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\/goc-tu-3.jpg\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i quy\u1ebft: D\u1ef1a tr\u00ean b\u1ea3n ch\u1ea5t c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 l\u00e0 g\u00f3c 90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 1: \u0110o g\u00f3c = 0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 2: \u0110o g\u00f3c &lt;90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 3: \u0110o g\u00f3c = 90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 4: \u0110o g\u00f3c&gt; 90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>=&gt; H\u00ecnh 4 l\u00e0 g\u00f3c nh\u00e0 t\u00f9.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Viet_ten_cua_cac_goc_nha_tu_trong_buc_tranh_da_cho\"><\/span>M\u1eabu 2: Vi\u1ebft t\u00ean c\u1ee7a c\u00e1c g\u00f3c nh\u00e0 t\u00f9 trong b\u1ee9c tranh \u0111\u00e3 cho<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i s\u1ebd d\u1ef1a v\u00e0o c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c \u0111\u1ec3 \u0111\u1ecdc t\u00ean ch\u00ednh x\u00e1c c\u1ee7a g\u00f3c v\u00e0 c\u00e1c m\u1eb7t li\u00ean quan.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Vi\u1ebft t\u00ean c\u1ee7a g\u00f3c nh\u00e0 t\u00f9 v\u00e0 c\u00e1c c\u1ea1nh c\u1ee7a con s\u1ed1 ch\u00ednh x\u00e1c<\/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\/goc-tu-4.jpg\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i ph\u00e1p: H\u00ecnh tr\u00ean c\u00f3 g\u00f3c nh\u00e0 t\u00f9 cao \u0111i\u1ec3m<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Ve_hinh_anh_tuong_ung_voi_goc\"><\/span>M\u1eabu 3: V\u1ebd h\u00ecnh \u1ea3nh t\u01b0\u01a1ng \u1ee9ng v\u1edbi g\u00f3c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: D\u1ef1a tr\u00ean c\u00e1c y\u00eau c\u1ea7u c\u1ee7a v\u1ea5n \u0111\u1ec1, \u0111\u1ec3 tr\u1ebb em s\u1eed d\u1ee5ng g\u00f3c ho\u1eb7c Eke \u0111\u1ec3 v\u1ebd g\u00f3c nh\u00e0 t\u00f9 t\u01b0\u01a1ng \u1ee9ng v\u1edbi ph\u00e9p \u0111o g\u00f3c t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1ee3c \u0111\u01b0a ra.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: V\u1ebd g\u00f3c nh\u00e0 t\u00f9 cao \u0111i\u1ec3m o, ox, oy v\u1edbi ph\u00e9p \u0111o g\u00f3c t\u01b0\u01a1ng \u1ee9ng b\u1eb1ng 130 \u0111\u1ed9.<\/em><\/p>\n<p dir=\"ltr\"><em>Ph\u1ea7n th\u01b0\u1edfng:<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 1: Ch\u00fang t\u00f4i v\u1ebd \u0111\u01b0\u1eddng OY<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 2: S\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o g\u00f3c ngang b\u1eb1ng \u0111\u01b0\u1eddng th\u1eb3ng oy, \u0111i\u1ec3m 0 \u0111\u1ed9 tr\u00ean th\u01b0\u1edbc s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1eb7t ngay l\u1eadp t\u1ee9c o.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 3: Ti\u1ebfn h\u00e0nh x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m 130 \u0111\u1ed9 tr\u00ean th\u01b0\u1edbc \u0111o t\u01b0\u01a1ng \u1ee9ng<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 4: K\u1ebft n\u1ed1i \u0111\u1ec9nh O v\u1edbi \u0111i\u1ec3m nh\u1ecdn trong b\u01b0\u1edbc 3 s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng Ox.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 5: Ch\u00fang t\u00f4i c\u00f3 m\u1ed9t g\u00f3c s\u1eafc n\u00e9t yox = 130 \u0111\u1ed9.<\/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\/goc-tu-5.jpg\" alt=\"\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_ve_goc_de_em_be_tap_luyen\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 g\u00f3c \u0111\u1ec3 em b\u00e9 t\u1eadp luy\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 c\u1ee7a to\u00e1n h\u1ecdc li\u00ean quan \u0111\u1ebfn g\u00f3c, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp cho tr\u1ebb th\u1ef1c h\u00e0nh:<\/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\/goc-tu-8.jpg\" alt=\"(Ngu\u1ed3n: T\u00f3m t\u1eaft)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_hoc_tap_va_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_goc_hieu_qua\"><\/span>B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c g\u00f3c hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc v\u00e0 hi\u1ec3u t\u1ed1t \u1edf g\u00f3c nh\u00e0 t\u00f9 c\u0169ng nh\u01b0 nhi\u1ec1u ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn to\u00e1n h\u1ecdc m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, cha m\u1eb9 c\u00f3 th\u1ec3 ngay l\u1eadp t\u1ee9c \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 l\u1eddi khuy\u00ean sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tao_tinh_yeu_toan_hoc_cho_tre_em_voi_toan_hoc_khi\"><\/span>T\u1ea1o t\u00ecnh y\u00eau to\u00e1n h\u1ecdc cho 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 h\u1ecdc l\u00e0 m\u1ed9t trong nh\u1eefng m\u00f4n h\u1ecdc c\u01a1 b\u1ea3n v\u00e0 quan tr\u1ecdng trong h\u1ecdc t\u1eadp v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a tr\u1ebb em. Do \u0111\u00f3, \u0111i\u1ec1u r\u1ea5t quan tr\u1ecdng l\u00e0 c\u00f3 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y ph\u00f9 h\u1ee3p cho tr\u1ebb em.<\/p>\n<p dir=\"ltr\">Tuy nhi\u00ean, n\u1ebfu cha m\u1eb9 kh\u00f4ng c\u00f3 nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 h\u1ed7 tr\u1ee3 tr\u1ebb h\u1ecdc to\u00e1n, kh\u00f4ng c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m trong vi\u1ec7c d\u1ea1y tr\u1ebb, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o. \u0110\u00e2y l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u1ec3 gi\u1ea3ng d\u1ea1y to\u00e1n h\u1ecdc tr\u1ef1c tuy\u1ebfn cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 h\u1ecdc sinh ti\u1ec3u h\u1ecdc \u0111ang \u0111\u01b0\u1ee3c nhi\u1ec1u ph\u1ee5 huynh tin t\u01b0\u1edfng.<\/p>\n<p dir=\"ltr\">\u0110\u1eb7c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math l\u00e0 theo s\u00e1t ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c m\u1edbi nh\u1ea5t c\u1ee7a B\u1ed9, c\u00f9ng v\u1edbi vi\u1ec7c x\u00e2y d\u1ef1ng h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc bao g\u1ed3m ki\u1ebfn \u200b\u200bth\u1ee9c h\u00ecnh h\u1ecdc nh\u01b0 ph\u00e2n \u0111o\u1ea1n, \u0111\u01b0\u1eddng th\u1eb3ng, g\u00f3c, h\u00ecnh h\u1ecdc, v.v.<\/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\/goc-tu-6.jpg\" alt=\"H\u1ecdc to\u00e1n theo nhi\u1ec1u 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\">C\u1ee5 th\u1ec3, c\u00e1c b\u00e0i gi\u1ea3ng v\u1ec1 to\u00e1n h\u1ecdc kh\u1ec9 \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u01b0\u1edbi d\u1ea1ng c\u00e1c video v\u00e0 h\u00ecnh \u1ea3nh h\u00e0i h\u01b0\u1edbc c\u1ee7a ho\u1ea1t h\u00ecnh \u0111\u1ec3 gi\u00fap tr\u1ebb em ti\u1ebfp thu v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c ki\u1ebfn \u200b\u200bth\u1ee9c hi\u1ec7u qu\u1ea3 h\u01a1n l\u00e0 h\u1ecdc tr\u00ean s\u00e1ch. C\u00f9ng v\u1edbi h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c, \u0111\u1ec3 h\u1ecd c\u00f3 th\u1ec3 ch\u01a1i v\u00e0 h\u1ecdc c\u00e1ch ph\u00e1t tri\u1ec3n t\u01b0 duy &amp; tr\u00ed th\u00f4ng minh trong giai \u0111o\u1ea1n ho\u00e0ng kim c\u1ee7a s\u1ef1 ph\u00e1t tri\u1ec3n n\u00e3o b\u1ed9, c\u0169ng nh\u01b0 tr\u1ebb em h\u1ecdc to\u00e1n th\u00fa v\u1ecb h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c y\u00eau th\u00edch h\u01a1n.<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, cha m\u1eb9 ho\u00e0n to\u00e0n gi\u1ea3m g\u00e1nh n\u1eb7ng khi d\u1ea1y tr\u1ebb h\u1ecdc to\u00e1n \u1edf nh\u00e0. C\u00f9ng v\u1edbi \u0111\u00f3, chi ph\u00ed l\u00e0 \u00edt h\u01a1n 2000 VND\/ng\u00e0y \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng v\u00e0 t\u00ecnh y\u00eau c\u1ee7a vi\u1ec7c h\u1ecdc to\u00e1n c\u1ee7a tr\u1ebb em, ch\u1eafc ch\u1eafn m\u1ecdi ph\u1ee5 huynh \u0111\u1ec1u mu\u1ed1n. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng \u1ee9ng d\u1ee5ng mi\u1ec5n ph\u00ed \u0111\u1ec3 tr\u1ea3i nghi\u1ec7m v\u1edbi con b\u1ea1n ngay h\u00f4m nay.<\/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=\"Lay_mot_vi_du_ve_mot_goc_nha_tu_thong_qua_thuc_hanh_tro_choi\"><\/span>L\u1ea5y m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 m\u1ed9t g\u00f3c nh\u00e0 t\u00f9 th\u00f4ng qua th\u1ef1c h\u00e0nh, tr\u00f2 ch\u01a1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap tr\u1ebb d\u1ec5 d\u00e0ng t\u01b0\u1edfng t\u01b0\u1ee3ng g\u00f3c nh\u00e0 t\u00f9 thay v\u00ec ch\u1ec9 n\u00f3i l\u1edbn h\u01a1n 90 \u00b0, d\u01b0\u1edbi 180 \u00b0, cha m\u1eb9 n\u00ean \u0111\u01b0a ra nh\u1eefng v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, g\u1ea7n g\u0169i h\u01a1n v\u1edbi tr\u1ebb em. V\u00ed d\u1ee5, h\u00ecnh \u1ea3nh c\u1ee7a \u0111\u1ed3ng h\u1ed3 ch\u1ec9 l\u00e0 4 gi\u1edd, 5h, 3H55 &#8230;. ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c que nh\u01b0 t\u0103m, \u0111\u0169a, &#8230; \u0111\u1ec3 k\u1ebft h\u1ee3p n\u00f3 th\u00e0nh h\u00ecnh d\u1ea1ng nh\u00e0 t\u00f9 &#8230; v\u00ec v\u1eady b\u1ea1n s\u1ebd d\u1ec5 hi\u1ec3u v\u00e0 d\u1ec5 d\u00e0ng nh\u1eadn ra khi gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuc_hanh_voi_em_be_cua_ban_thuc_hanh_thuong_xuyen\"><\/span>Th\u1ef1c h\u00e0nh v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n, th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">N\u1ebfu b\u1ea1n ch\u1ec9 h\u1ecdc l\u00fd thuy\u1ebft, b\u1ea1n r\u1ea5t d\u1ec5 qu\u00ean. Do \u0111\u00f3, cha m\u1eb9 n\u00ean y\u00eau c\u1ea7u em b\u00e9 th\u1ef1c h\u00e0nh v\u00e0 th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean. Th\u1ef1c h\u00e0nh c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb vi\u1ec7c y\u00eau c\u1ea7u tr\u1ebb l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong l\u1edbp, trong s\u00e1ch gi\u00e1o khoa, b\u00e0i t\u1eadp, t\u00ecm hi\u1ec3u th\u00eam ki\u1ebfn \u200b\u200bth\u1ee9c m\u1edbi tr\u00ean internet, h\u1ecdc ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e2ng cao thay v\u00ec ch\u1ec9 d\u1eebng l\u1ea1i \u1edf c\u1ea5p \u0111\u1ed9 c\u01a1 b\u1ea3n, &#8230;<\/p>\n<p dir=\"ltr\">Khi th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean, n\u00f3 s\u1ebd gi\u00fap b\u00e9 hi\u1ec3u v\u00e0 nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c t\u1ed1t h\u01a1n. C\u00f9ng v\u1edbi n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t ti\u1ec1n \u0111\u1ec1 t\u1ed1t cho tr\u1ebb em \u0111\u1ec3 h\u1ecdc ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan trong l\u1edbp m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/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\/goc-tu-7.jpg\" alt=\"Th\u1ef1c h\u00e0nh v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n th\u01b0\u1eddng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/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 \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 g\u00f3c, m\u1ed9t trong nh\u1eefng g\u00f3c \u0111\u1ed9 quan tr\u1ecdng trong to\u00e1n h\u1ecdc h\u00ecnh h\u1ecdc m\u00e0 h\u1ecd c\u1ea7n hi\u1ec3u v\u00e0 nh\u1edb h\u1ecdc v\u00e0 gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Hy v\u1ecdng r\u1eb1ng, v\u1edbi vi\u1ec7c chia s\u1ebb tr\u00ean kh\u1ec9 \u1edf tr\u00ean s\u1ebd h\u1ed7 tr\u1ee3 ph\u1ee5 huynh v\u00e0 tr\u1ebb em h\u1ecdc h\u1ecfi v\u00e0 th\u00e0nh th\u1ea1o ki\u1ebfn \u200b\u200bth\u1ee9c n\u00e0y t\u1ed1t h\u01a1n.<\/p>\n<p>                                    T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n<p>G\u00f3c kh\u00f3 kh\u0103n<\/p>\n<p>https:\/\/byjus.com\/maths\/obtuse-angle\/#:~:Text=in%20Mathatics%2C%20%80<\/p>\n<p>G\u00f3c kh\u00f3 kh\u0103n &#8211; \u0110\u1ecbnh ngh\u0129a v\u1edbi c\u00e1c v\u00ed d\u1ee5<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"0l6NXXq9Yq\"><p><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/degree-angle-measure\/obtuse-angle\/#main\" target=\"_blank\" rel=\"noopener\">Obtuse angle<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Obtuse angle&#8221; &#8212; SplashLearn\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/degree-angle-measure\/obtuse-angle\/#main\/embed\/#?secret=IbemCd4H4E#?secret=0l6NXXq9Yq\" data-secret=\"0l6NXXq9Yq\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/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>G\u00f3c nh\u00e0 t\u00f9 l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n c\u1ee7a h\u1ecdc sinh l\u1edbp 4 s\u1ebd h\u1ecdc. \u0110\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t g\u00f3c \u0111\u1eb7c bi\u1ec7t trong h\u00ecnh h\u1ecdc, n\u1ebfu n\u00f3 kh\u00f4ng ch\u1eafc ch\u1eafn s\u1ebd b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi g\u00f3c kh\u00e1c, d\u1eabn \u0111\u1ebfn b\u00e0i t\u1eadp sai. V\u00ec v\u1eady, \u0111\u1ec3 hi\u1ec3u g\u00f3c l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a&#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-17070","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/17070","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=17070"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/17070\/revisions"}],"predecessor-version":[{"id":23527,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/17070\/revisions\/23527"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=17070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=17070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=17070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}