名校
1 . 已知
,
是两条不同直线,
,
是两个不同平面,给出下列四个命题:
①若
,
垂直于同一平面,则
与
平行;
②若
,
平行于同一平面,则
与
平行;
③若
,
不平行,则在
内不存在与
平行的直线;
④若
,
不平行,则
与
不可能垂直于同一平面
其中真命题的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
其中真命题的个数为( )
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
2020-02-04更新
|
346次组卷
|
4卷引用:2016届上海市闸北区高三上学期期末(文)数学试题
2016届上海市闸北区高三上学期期末(文)数学试题上海市闸北区2016届高三上学期期末数学试题(12月)上海市金山中学2019-2020学年高二下学期期中数学试题(已下线)专题2.4 空间直线与平面【章节复习专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)
2 . 如图,在四棱锥
中,
平面
,
,
都是等腰直角三角形,
,四边形
是直角梯形,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/63a208c8-e4de-41c8-be01-68d2f3112d6a.png?resizew=192)
(1)求证:
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf410aab32ba002b2c4e7343e7efd4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83b76a280fc562446ee8ddd2d6bf1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/63a208c8-e4de-41c8-be01-68d2f3112d6a.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d50a68fed1c23837d1267bdda5c1962.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
3 . 下列命题:①若两条直线都与第三条直线平行,则这两条直线互相平行;
②若两条直线都与第三条直线垂直,则这两条直线互相平行;
③若两条直线都与同一平面平行,则这两条直线互相平行;
④若两条直线都与同一平面垂直,则这两条直线互相平行.其中正确的是
②若两条直线都与第三条直线垂直,则这两条直线互相平行;
③若两条直线都与同一平面平行,则这两条直线互相平行;
④若两条直线都与同一平面垂直,则这两条直线互相平行.其中正确的是
A.①② | B.②③ | C.①④ | D.③④ |
您最近一年使用:0次
4 . 在三棱锥
中,平面
平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/fb65b689-e3cd-42a1-8773-eaf39975d97f.png?resizew=166)
(1)证明:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7284003d7791f70b5a58c36cc24971b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ff87102c14ae8c4c99c825ecf7d9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa6fd52f3933cbded9ce8c880b4a10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/fb65b689-e3cd-42a1-8773-eaf39975d97f.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce7fa1a53ed0dd245c4fcf13e7bee8d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
5 . 已知正方体
,
分别为
和
上的点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/94f5b982-b9c7-4f35-a4d4-99b5d56a79f3.png?resizew=169)
(1)求证:
;
(2)求证:
三条直线交于一点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661df691bacf67f20557fef29c1af1eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/94f5b982-b9c7-4f35-a4d4-99b5d56a79f3.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18651187aefe66083be1358eeffa2e55.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55cf07b3d7d4c1c241181ff66a00097e.png)
您最近一年使用:0次
真题
6 . 垂直于同一平面的两条直线( )
A.平行 | B.垂直 | C.相交 | D.异面 |
您最近一年使用:0次
2022-11-09更新
|
840次组卷
|
3卷引用:2007 年普通高等学校招生考试数学(文)试题(重庆卷)
名校
7 . 如图,三棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/35817ad9-d26e-4eda-944c-c4cbc7708398.png?resizew=183)
(1)证明:
;
(2)若平面
平面
,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa3d0db9ad31d33c2883a6efed1dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29e8a1eefb6776168969a1155c9e9c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/35817ad9-d26e-4eda-944c-c4cbc7708398.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba985fb50a9078a839b66bf1d1eadea9.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b1925ea2bd4f25794463d586a160b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9371dfb50dcf4f6863ecc271c0ae76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7a5e032e61a0b576ef6468714ab4a8.png)
您最近一年使用:0次
8 . 已知
为直线,
为平面,有下列三个命题:
①
,
,
,则
;
②
,
,则
;
③
,
,则
;
④
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b330d69a949d9b55f4b6f18f47e0a37.png)
其中正确命题是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d6a7aec04e1d5768ef830b534460a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb74d1dd9a5c29da15e6cdaae435af86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187f7895012551f2067f0b77d8df2141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e076b91a9178217532e11c496400e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d6a7aec04e1d5768ef830b534460a7.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b330d69a949d9b55f4b6f18f47e0a37.png)
其中正确命题是
您最近一年使用:0次
9 . 如图所示,已知平面
平面
,平面
平面
,
,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2018/1/1/2084572131926016/2085137944649728/STEM/999a8538fbe54087b8fde8966da8d250.png?resizew=169)
您最近一年使用:0次
2018-11-28更新
|
336次组卷
|
2卷引用:北师大版 全能练习 必修2 第一章 6.2 垂直关系的性质
2018高一上·全国·专题练习
10 . 在正方体
中,点
分别在
上,
,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a460f95e8ebabac97d572fecea8fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f12910c2ceaeb7721dd0cab598157b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428ba675ee6a1a4b679e201075d5.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7889947f82495b0721461b49b045bc4d.png)
您最近一年使用:0次