C\u00e2u 1:<\/b>\u00a0Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n

Kh\u1ed1i \u0111a di\u1ec7n c\u00f3 c\u00e1c m\u1eb7t l\u00e0 nh\u1eefng h\u00ecnh ng\u0169 gi\u00e1c th\u00ec<\/p>\n

A. S\u1ed1 c\u00e1c m\u1eb7t l\u00e0 s\u1ed1 l\u1ebb\u00a0\u00a0\u00a0C. s\u1ed1 c\u00e1c c\u1ea1nh l\u00e0 s\u1ed1 l\u1ebb<\/p>\n

B. S\u1ed1 c\u00e1c \u0111\u1ec9nh l\u00e0 s\u1ed1 l\u1ebb\u00a0\u00a0\u00a0D. s\u1ed1 c\u00e1c m\u1eb7t l\u00e0 s\u1ed1 ch\u1eb5n<\/p>\n

C\u00e2u 2:<\/b>\u00a0Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n

A. T\u1ed3n t\u1ea1i c\u00e1c kh\u1ed1i \u0111a di\u1ec7n \u0111\u1ec1u lo\u1ea1i (5;3)<\/p>\n

B. T\u1ed3n t\u1ea1i c\u00e1c kh\u1ed1i \u0111a di\u1ec7n \u0111\u1ec1u lo\u1ea1i (5;4)<\/p>\n

C. T\u1ed3n t\u1ea1i c\u00e1c kh\u1ed1i \u0111a di\u1ec7n \u0111\u1ec1u lo\u1ea1i (5;5)<\/p>\n

D. T\u1ed3n t\u1ea1i c\u00e1c kh\u1ed1i \u0111a di\u1ec7n \u0111\u1ec1u lo\u1ea1i (4;5)<\/p>\n

C\u00e2u 3:<\/b>\u00a0Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau m\u1ec7nh \u0111\u1ec1 n\u00e0o sai?<\/p>\n

A. T\u1ed3n t\u1ea1i m\u1ed9t h\u00ecnh \u0111a di\u1ec7n \u0111\u1ec1u c\u00f3 s\u1ed1 \u0111\u1ec9nh l\u1edbn h\u01a1n s\u1ed1 m\u1eb7t<\/p>\n

B. T\u1ed3n t\u1ea1i m\u1ed9t h\u00ecnh \u0111a di\u1ec7n \u0111\u1ec1u c\u00f3 s\u1ed1 \u0111\u1ec9nh b\u1eb1ng s\u1ed1 m\u1eb7t<\/p>\n

C. T\u1ed3n t\u1ea1i m\u1ed9t h\u00ecnh \u0111a di\u1ec7n \u0111\u1ec1u c\u00f3 s\u1ed1 \u0111\u1ec9nh nh\u1ecf h\u01a1n s\u1ed1 m\u1eb7t<\/p>\n

D. T\u1ed3n t\u1ea1i m\u1ed9t h\u00ecnh \u0111a di\u1ec7n \u0111\u1ec1u c\u00f3 s\u1ed1 c\u1ea1nh nh\u1ecf h\u01a1n s\u1ed1 m\u1eb7t<\/p>\n

C\u00e2u 4:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch V c\u1ee7a kh\u1ed1i b\u00e1t di\u1ec7n \u0111\u1ec1u c\u1ea1nh a.<\/p>\n

<\/p>\n

C\u00e2u 5:<\/b>\u00a0Cho h\u00ecnh ch\u00f3p S.ABC. M, N l\u1ea7n l\u01b0\u1ee3t \u00e0 trung \u0111i\u1ec3m c\u1ee7a AB, AC. G\u1ecdi V, V\u2019 l\u1ea7n l\u01b0\u1ee3t l\u00e0 th\u1ec3 t\u00edch c\u1ee7a c\u00e1c h\u00ecnh ch\u00f3p S.ABC v\u00e0 S.MBCN.<\/p>\n

<\/p>\n

C\u00e2u 6:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch V c\u1ee7a h\u00ecnh ch\u00f3p S.ABC c\u00f3 \u0111\u00e1y l\u00e0 tam gi\u00e1c \u0111\u1ec1u c\u00f3 c\u1ea1nh b\u1eb1ng a, SA vu\u00f4ng g\u00f3c v\u1edbi \u0111\u00e1y, m\u1eb7t ph\u1eb3ng (SBC) t\u1ea1o v\u1edbi \u0111\u00e1y m\u1ed9t g\u00f3c b\u1eb1ng 45^{o<\/sup><\/p>\n}

<\/p>\n

C\u00e2u 7:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch V c\u1ee7a h\u00ecnh ch\u00f3p S.ABC c\u00f3 \u0111\u00e1y l\u00e0 tam gi\u00e1c \u0111\u1ec1u c\u00f3 c\u1ea1nh b\u1eb1ng a, SA vu\u00f4ng g\u00f3c v\u1edbi \u0111\u00e1y, di\u1ec7n t\u00edch tam gi\u00e1c SAC b\u1eb1ng 3a^{2<\/sup>\/4<\/p>\n}

<\/p>\n

H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0110\u00e1p \u00e1n<\/b><\/p>\n\n\n\n

1-D<\/td>\n

2-A<\/td>\n

3-D<\/td>\n

4-B<\/td>\n

5-C<\/td>\n

6-A<\/td>\n

7-A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":" C\u00e2u 1:\u00a0Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang? Kh\u1ed1i \u0111a di\u1ec7n c\u00f3 c\u00e1c m\u1eb7t l\u00e0 nh\u1eefng h\u00ecnh ng\u0169 gi\u00e1c th\u00ec A. S\u1ed1 c\u00e1c m\u1eb7t l\u00e0 s\u1ed1 l\u1ebb\u00a0\u00a0\u00a0C. s\u1ed1 c\u00e1c c\u1ea1nh l\u00e0 s\u1ed1 l\u1ebb B. S\u1ed1 c\u00e1c \u0111\u1ec9nh l\u00e0 s\u1ed1 l\u1ebb\u00a0\u00a0\u00a0D. s\u1ed1 c\u00e1c m\u1eb7t l\u00e0 s\u1ed1 ch\u1eb5n C\u00e2u 2:\u00a0Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y […]<\/p>\n","protected":false},"author":3,"featured_media":28829,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[157],"tags":[1450,1448],"yoast_head":"\n