C\u00e2u 6 (1\u0111i\u1ec3m)<\/strong>Cho h\u00ecnh l\u0103ng tr\u1ee5 tam gi\u00e1c ABC.A\u2019B\u2019C\u2019 c\u00f3 c\u1ea1nh b\u00ean b\u1eb1ng a, \u0111\u00e1y A\u2019B\u2019C\u2019 l\u00e0 tam gi\u00e1c \u0111\u1ec1u c\u1ea1nh b\u1eb1ng a, h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a \u0111\u1ec9nh B l\u00ean (A\u2019B\u2019C\u2019) l\u00e0 trung \u0111i\u1ec3m H c\u1ee7a c\u1ea1nh A\u2019B\u2019. G\u1ecdi E l\u00e0 trung \u0111i\u1ec3m c\u1ee7a c\u1ea1nh AC. T\u00ednh th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i t\u1ee9 di\u1ec7n EHB\u2019C\u2019 v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb \u0111i\u1ec3m C \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (ABB\u2019A\u2019).<\/p>\n C\u00e2u 7 (1\u0111i\u1ec3m)<\/strong>Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho h\u00ecnh vu\u00f4ng ABCD c\u00f3 \u0111\u1ec9nhC(-4;-3) v\u00e0 M l\u00e0 m\u1ed9t \u0111i\u1ec3m n\u1eb1m tr\u00ean c\u1ea1nh AB ( M kh\u00f4ng tr\u00f9ng v\u1edbi A v\u00e0 B ). G\u1ecdi E, F l\u1ea7n l\u01b0\u1ee3t l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a A, C l\u00ean DM v\u00e0 I(2;3) l\u00e0 giao \u0111i\u1ec3m c\u1ee7a CE v\u00e0 BF. T\u00ecm t\u1ecda \u0111\u1ed9 c\u00e1c \u0111\u1ec9nh c\u00f2n l\u1ea1i c\u1ee7a h\u00ecnh vu\u00f4ng ABCD bi\u1ebft r\u1eb1ng \u0111\u1ec9nh B n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng d c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh x- 2y + 10=0 <\/p>\n <\/strong><\/p>\n \u0110\u00e1p \u00e1n: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n – THPT Y\u00ean Th\u1ebf L\u1ea7n 3 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><\/p>\n<\/p>\n \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n c\u1ee7a tr\u01b0\u1eddng THPT Y\u00ean Th\u1ebf l\u1ea7n 3 n\u0103m 2016, H\u00e0 N\u1ed9i, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: C\u00e2u 6 (1\u0111i\u1ec3m)Cho h\u00ecnh l\u0103ng tr\u1ee5 tam gi\u00e1c ABC.A\u2019B\u2019C\u2019 c\u00f3 c\u1ea1nh b\u00ean b\u1eb1ng a, \u0111\u00e1y A\u2019B\u2019C\u2019 l\u00e0 tam gi\u00e1c \u0111\u1ec1u c\u1ea1nh b\u1eb1ng a, h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a \u0111\u1ec9nh B […]<\/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
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