\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n c\u1ee7a tr\u01b0\u1eddng THPT \u0110a Ph\u00fac n\u0103m 2016, c\u00e1c em theo d\u00f5i chi ti\u1ebft b\u00ean d\u01b0\u1edbi:<\/p>\n
C\u00e2u 3 (2,5 \u0111i\u1ec3m)<\/strong><\/p>\n t\u00ednh \u0111\u1ea1o h\u00e0m c\u1ee7a c\u00e1c h\u00e0m s\u1ed1 sau:<\/p>\n a)\u00a0<\/p>\n b)\u00a0<\/p>\n C\u00e2u 5. (4,0 \u0111i\u1ec3m)<\/strong>\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt t\u00e2m O, AB = 2AD = 2a, SA vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng\u00a0(ABCD), SA = a. G\u1ecdi I l\u00e0 trung \u0111i\u1ec3m c\u1ee7a c\u1ea1nh CD.<\/p>\n a) Ch\u1ee9ng minh r\u1eb1ng AB \u22a5 (SAD).<\/p>\n b) Ch\u1ee9ng minh r\u1eb1ng (SAI) \u22a5 (SBI).<\/p>\n c) T\u00ednh g\u00f3c gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng AC v\u00e0 m\u1eb7t ph\u1eb1ng (SBI).<\/p>\n d) T\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng SO v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng AI theo a.<\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ec1 thi h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n c\u1ee7a tr\u01b0\u1eddng THPT \u0110a Ph\u00fac n\u0103m 2016, c\u00e1c em theo d\u00f5i chi ti\u1ebft b\u00ean d\u01b0\u1edbi: C\u00e2u 3 (2,5 \u0111i\u1ec3m) t\u00ednh \u0111\u1ea1o h\u00e0m c\u1ee7a c\u00e1c h\u00e0m s\u1ed1 sau: a)\u00a0 b)\u00a0 C\u00e2u 5. (4,0 \u0111i\u1ec3m)\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt t\u00e2m O, AB […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[171],"tags":[],"yoast_head":"\n