C\u00e2u 6 (1,0 \u0111i\u1ec3m).<\/strong>Cho h\u00ecnh l\u0103ng tr\u1ee5 ABC.A\u2019B\u2019C\u2019 c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng c\u00e2n t\u1ea1i B v\u1edbiAB = 2a. H\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a B xu\u1ed1ng m\u1eb7t \u0111\u00e1y (A\u2019B\u2019C\u2019) l\u00e0 trung \u0111i\u1ec3m H c\u1ee7a c\u1ea1nh A\u2019B\u2019. T\u00ednh theo a th\u1ec3 t\u00edch kh\u1ed1i l\u0103ng tr\u1ee5 ABC.A\u2019B\u2019C\u2019 v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb C\u2019 \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (A\u2019BC) bi\u1ebft g\u00f3c gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng BC\u2019 v\u00e0 m\u1eb7t ph\u1eb3ng (A\u2019B\u2019C\u2019) b\u1eb1ng 45<\/p>\n <\/p>\n \u0110\u00e1p \u00e1n:\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n – THPT H\u00e0n Thuy\u00ean L\u1ea7n 2 n\u1eafm 2016<\/strong><\/p>\n <\/strong><\/p>\n Xem \u0111\u00e1p \u00e1n \u0111\u1ea7y \u0111\u1ee7 t\u1ea1i \u0111\u00e2y: http:\/\/tuyensinh247.com\/khoa-98-de-thi-thu-thpt-quoc-gia-toan-hoc-hay-nhat-cua-cac-truong-thpt-chuyen-tren-toan-quoc-nam-2016-k151.html<\/strong><\/strong><\/p>\n <\/strong><\/p>\n \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n c\u1ee7a tr\u01b0\u1eddng THPT H\u00e0n Thuy\u00ean L\u1ea7n 2 n\u0103m 2016, H\u00e0 N\u1ed9i, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: C\u00e2u 6 (1,0 \u0111i\u1ec3m).Cho h\u00ecnh l\u0103ng tr\u1ee5 ABC.A\u2019B\u2019C\u2019 c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng c\u00e2n t\u1ea1i B v\u1edbiAB = 2a. H\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a B xu\u1ed1ng m\u1eb7t \u0111\u00e1y […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n
<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"