1 . 如图,设E,F分别是长方体
的棱CD上的两个动点,点E在点F的左边,且满足
,有下列结论:( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d5f0b1de-7aeb-45f6-9e1f-358403232564.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366e62778cd38f62e722b73d8cb9a542.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d5f0b1de-7aeb-45f6-9e1f-358403232564.png?resizew=160)
A.![]() ![]() |
B.三棱锥![]() |
C.![]() ![]() |
D.平面![]() ![]() |
您最近一年使用:0次
2022-07-14更新
|
300次组卷
|
2卷引用:福建省山海联盟校教学协作体2021-2022学年高二下学期期末考试数学试题
2 . 如图,在四面体
中,
平面
,
分别是
的中点,P是线段BN上的动点(不与点B,N重合),Q是侧面
内的动点,
,
,下面说法证确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/2f6c2c01-aed6-4370-9a3a-7d4cec85da28.png?resizew=159)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f869bea4fca24915497d6a4179c805af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a05e0ab55e325fb3b85fc8ca9c27c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503c035fc57fb25aede1445af9aa2747.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/2f6c2c01-aed6-4370-9a3a-7d4cec85da28.png?resizew=159)
A.四面体![]() |
B.四面体![]() |
C.若![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
3 . 如图,四棱锥
中,
底面ABCD,四边形ABCD为梯形,
,
,
,M是PA上靠近P点的三等分点,则下列叙述中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021101979869184/3022239792848896/STEM/1d574c07620c41088cf56c2c1a0e53dc.png?resizew=162)
![](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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0566398557b103067d8fb54f05a666.png)
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021101979869184/3022239792848896/STEM/1d574c07620c41088cf56c2c1a0e53dc.png?resizew=162)
A.![]() | B.![]() |
C.异面直线BC与PD所成的角是![]() | D.直线PC与底面ABCD所成角的余弦值为![]() |
您最近一年使用:0次
2022-07-14更新
|
340次组卷
|
2卷引用:甘肃省酒泉市2021-2022学年高一下学期期末数学试题
4 . 已知点P为正方体
内及表面一点,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5ea309886e947ea7cb4b81716206fd.png)
A.若![]() ![]() |
B.若点P位于正方体的表面,则三棱锥![]() |
C.存在点P,使得![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2022-07-13更新
|
1020次组卷
|
6卷引用:广东省茂名市2021-2022学年高二下学期期末数学试题
广东省茂名市2021-2022学年高二下学期期末数学试题(已下线)突破1.4 空间向量的应用(课时训练)重庆市缙云教育联盟2023届高三上学期9月月度质量检测数学试题(已下线)第一章 空间向量与立体几何(基础、典型、新文化、压轴)分类专项训练-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)(已下线)高二上学期期末【压轴60题考点专练】(选修一+选修二)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)(已下线)期末押题预测卷02(范围:高考全部内容)-【单元测试】2022-2023学年高二数学分层训练AB卷(人教A版2019)
解题方法
5 . 如图,在棱长为
的正方体
中,点
为线段
上的动点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/797c7588-0c37-4534-aed3-fb3f4302153e.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/797c7588-0c37-4534-aed3-fb3f4302153e.png?resizew=172)
A.三棱锥![]() |
B.过![]() ![]() ![]() |
C.过![]() ![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
2022-07-13更新
|
680次组卷
|
4卷引用:湖南省永州市2021-2022学年高一下学期期末数学试题
湖南省永州市2021-2022学年高一下学期期末数学试题江西省南昌市2022-2023学年高二上学期末质量检测数学模拟试题(已下线)微专题11 立体几何中的截面问题(2)(已下线)期末专题08 立体几何小题综合-【备战期末必刷真题】
6 . 如图,四棱柱
底面是边长为1的正方形,
,点
是直线
上一动点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/21070ab1-5b5b-4f85-8c1a-c3d9862a26f2.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff33c22809a2b69c3c6578c9eb1f14e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384aab337f3f62abe8bf148eee83c192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/21070ab1-5b5b-4f85-8c1a-c3d9862a26f2.png?resizew=199)
A.若棱柱![]() ![]() |
B.若棱柱![]() ![]() ![]() ![]() ![]() ![]() |
C.不论![]() ![]() ![]() ![]() |
D.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
7 . 已知三个不同的平面
,
,
和三条不同的直线
,
,
,下列命题中为真命题的是( )
![](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/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2022-07-13更新
|
359次组卷
|
3卷引用:山东省青岛市莱西市2021-2022学年高一下学期期末数学试题
8 . 正方形
,的棱长为1,
,
分别为
,
的中点,下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.直线![]() ![]() |
B.平面![]() ![]() |
C.在线段![]() ![]() ![]() ![]() |
D.在棱![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
9 . 已知三棱锥
,
,
是边长为2的正三角形,E为
中点,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fc65a72853bd8ac1ad0828270d3baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbf25292ff28709ea1511db9bdda525.png)
A.![]() | B.异面直线![]() ![]() ![]() |
C.![]() ![]() ![]() | D.三棱锥![]() ![]() |
您最近一年使用:0次
2022-07-10更新
|
1344次组卷
|
7卷引用:湖北省新高考联考协作体2021-2022学年高一下学期期末数学试题
解题方法
10 . 如图,在边长为2的正方形
中,E,F分别为
,
的中点,H为
的中点,沿
,
,
将正方形折起,使B,C,D重合于点O,构成四面体,则在四面体
中,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016805854396416/3019031825457152/STEM/ea1eb3254de04021b56c3b25d8d64bca.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd7177a1af632169e5f4740c1b50d6b.png)
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016805854396416/3019031825457152/STEM/ea1eb3254de04021b56c3b25d8d64bca.png?resizew=131)
A.四面体的体积为![]() | B.![]() ![]() |
C.![]() | D.四面体外接球的半径为![]() |
您最近一年使用:0次