Đường thẳng và mặt phẳng trong không gian

Home Lớp 11 Toán lớp 11 - Sách kết nối tri thức Bài 10. Đường thẳng và mặt phẳng trong không gian.Bài tập cơ bản

{"common":{"save":0,"post_id":"7066","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5034","post_id":"7066","mon_id":"1158924","chapter_id":"1159156","question":"Trong các kh\u1eb3ng \u0111\u1ecbnh sau, kh\u1eb3ng \u0111\u1ecbnh nào \u0111úng?<\/p>","options":["A.<\/strong> Qua 2 \u0111i\u1ec3m phân bi\u1ec7t có duy nh\u1ea5t m\u1ed9t m\u1eb7t ph\u1eb3ng.","B.<\/strong> Qua 3 \u0111i\u1ec3m phân bi\u1ec7t b\u1ea5t kì có duy nh\u1ea5t m\u1ed9t m\u1eb7t ph\u1eb3ng.","C.<\/strong> Qua 3 \u0111i\u1ec3m không th\u1eb3ng hàng có duy nh\u1ea5t m\u1ed9t m\u1eb7t ph\u1eb3ng.","D.<\/strong> Qua 4 \u0111i\u1ec3m phân bi\u1ec7t b\u1ea5t kì có duy nh\u1ea5t m\u1ed9t m\u1eb7t ph\u1eb3ng."],"correct":"3","level":"1","hint":"","answer":"A.<\/strong> Sai, vì qua 2 \u0111i\u1ec3m phân bi\u1ec7t t\u1ea1o thành 1 \u0111\u01b0\u1eddng th\u1eb3ng khi \u0111ó ch\u01b0a \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 l\u1eadp m\u1ed9t m\u1eb7t ph\u1eb3ng xác \u0111\u1ecbnh. Có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua 2 \u0111i\u1ec3m \u0111ã cho.<\/p>B.<\/strong> Sai. Trong tr\u01b0\u1eddng h\u1ee3p 3 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng thì ch\u1ec9 t\u1ea1o \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng th\u1eb3ng, khi \u0111ó có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua qua 3 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng.<\/p>D.<\/strong> Sai. Trong tr\u01b0\u1eddng h\u1ee3p 4 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng thì có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua 4 \u0111i\u1ec3m \u0111ó ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p 4 \u0111i\u1ec3m \u0111ó không \u0111\u1ed3ng ph\u1eb3ng thì s\u1ebd không t\u1ea1o \u0111\u01b0\u1ee3c m\u1eb7t ph\u1eb3ng nào \u0111i qua c\u1ea3 4 \u0111i\u1ec3m \u0111ó.<\/p>Ch\u1ecdn   C.<\/strong> Qua 3 \u0111i\u1ec3m không th\u1eb3ng hàng có duy nh\u1ea5t m\u1ed9t m\u1eb7t ph\u1eb3ng.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-01-01 01:09:56","option_type":"txt","len":3},{"id":"5036","post_id":"7066","mon_id":"1158924","chapter_id":"1159156","question":"Trong không gian, cho 4 \u0111i\u1ec3m không \u0111\u1ed3ng ph\u1eb3ng. Có th\u1ec3 xác \u0111\u1ecbnh \u0111\u01b0\u1ee3c bao nhiêu m\u1eb7t ph\u1eb3ng phân bi\u1ec7t t\u1eeb các \u0111i\u1ec3m \u0111ã cho?<\/p>","options":["A.<\/strong> 6","B.<\/strong> 4","C.<\/strong> 3","D.<\/strong> 2"],"correct":"2","level":"1","hint":"","answer":"V\u1edbi 3 \u0111i\u1ec3m phân bi\u1ec7t không th\u1eb3ng hàng, ta luôn t\u1ea1o \u0111\u01b0\u1ee3c 1 m\u1eb7t ph\u1eb3ng xác \u0111\u1ecbnh.<\/p>Khi \u0111ó, v\u1edbi 4 \u0111i\u1ec3m không \u0111\u1ed3ng ph\u1eb3ng ta t\u1ea1o \u0111\u01b0\u1ee3c t\u1ed1i \u0111a $C_4^3=4$<\/span> m\u1eb7t ph\u1eb3ng.<\/p>Ch\u1ecdn   B.<\/strong> 4.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-01-01 01:13:06","option_type":"txt","len":0},{"id":"5038","post_id":"7066","mon_id":"1158924","chapter_id":"1159156","question":"Các y\u1ebfu t\u1ed1 nào sau \u0111ây xác \u0111\u1ecbnh m\u1ed9t m\u1eb7t ph\u1eb3ng duy nh\u1ea5t?<\/p>","options":["A.<\/strong> Ba \u0111i\u1ec3m phân bi\u1ec7t.","B.<\/strong> M\u1ed9t \u0111i\u1ec3m và m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng.","C.<\/strong> Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau.","D.<\/strong> B\u1ed1n \u0111i\u1ec3m phân bi\u1ec7t."],"correct":"3","level":"1","hint":"","answer":"A.<\/strong> Sai. Trong tr\u01b0\u1eddng h\u1ee3p 3 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng thì ch\u1ec9 t\u1ea1o \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng th\u1eb3ng, khi \u0111ó có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua qua 3 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng.<\/p>B.<\/strong> Sai. Trong tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec3m thu\u1ed9c \u0111\u01b0\u1eddng th\u1eb3ng \u0111ã cho, khi \u0111ó ta ch\u1ec9 có 1 \u0111\u01b0\u1eddng th\u1eb3ng, có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua \u0111\u01b0\u1eddng th\u1eb3ng \u0111ó.<\/p>D.<\/strong> Sai. Trong tr\u01b0\u1eddng h\u1ee3p 4 \u0111i\u1ec3m phân bi\u1ec7t th\u1eb3ng hàng thì có vô s\u1ed1 m\u1eb7t ph\u1eb3ng \u0111i qua 4 \u0111i\u1ec3m \u0111ó ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p 4 \u0111i\u1ec3m \u0111ó không \u0111\u1ed3ng ph\u1eb3ng thì s\u1ebd không t\u1ea1o \u0111\u01b0\u1ee3c m\u1eb7t ph\u1eb3ng nào \u0111i qua c\u1ea3 4 \u0111i\u1ec3m \u0111ó.<\/p>Ch\u1ecdn   C.<\/strong> Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-01-01 01:20:48","option_type":"txt","len":2}]}