名校
1 . 如图所示,四面体
的各棱长均为
分别为棱
的中点,
为棱
上异于顶点的点,则以下结论正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2612d8c87010adfe87728a591b63e3a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
A.![]() |
B.直线![]() ![]() ![]() |
C.四面体![]() ![]() |
D.平面![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图,已知正方体
中,
分别为棱
、
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e12ef075231f9d4246417c0a9d527e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d396bc8cdde9d1ed203a3efafb4d7ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e3e67d56b946fd77a7f9d12222e0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fa259fccb129851a917df61664a7f7.png)
A.![]() | B.![]() ![]() |
C.![]() | D.RS与![]() ![]() |
您最近一年使用:0次
名校
3 . (多选)如图,八面体的每个面都是正三角形,若四边形
是边长为4的正方形,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.异面直线![]() ![]() ![]() |
B.二面角![]() ![]() |
C.此八面体存在外接球 |
D.此八面体的内切球表面积为![]() |
您最近一年使用:0次
名校
解题方法
4 . 图,在边长为4的正方形
中,
为
的中点,
为
的中点.若分别沿
,
把这个正方形折成一个四面体,使
、
两点重合,重合后的点记为
,则在四面体
中,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1507da3daed983c2f355d4caebb66d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() |
B.![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2024-06-04更新
|
731次组卷
|
3卷引用:山东省滨州市2024届高三下学期二模数学试题
5 . 在三棱锥
中,
平面
,点
是三角形
内的动点(含边界),
,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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5426e53bde470d216e49b0b6880cb548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
A.![]() ![]() ![]() |
B.三棱锥![]() |
C.![]() ![]() |
D.异面直线![]() ![]() ![]() |
您最近一年使用:0次
解题方法
6 . 在正方体
中,
为
的中点,
是底面
上一点,则( )
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() ![]() |
C.满足![]() ![]() |
D.满足直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 正方体
的棱长为2,
为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf725e3d44c1b473c0e748ac2f45f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
A.![]() | B.![]() ![]() ![]() |
C.面![]() ![]() ![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 如图,八面体的每个面都是正三角形,并且4个顶点
在同一个平面内,如果四边形
是边长为2的正方形,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.异面直线AE与DF所成角的大小为![]() | B.平面![]() ![]() |
C.此八面体一定存在外接球 | D.此八面体的内切球表面积为![]() |
您最近一年使用:0次
解题方法
9 . 如图,
是矩形
所在平面外一点,
,二面角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
为
,
为
中点,
为
中点,
为
中点.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b9239263f68a3c495a2b443fcedf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f35abf35a6045f10dd7f681fea6fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
2024·全国·模拟预测
解题方法
10 . 在正方体
中,点
,
,
,
,
分别为
,
,
,
,
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
A.直线![]() ![]() | B.直线![]() ![]() ![]() |
C.点![]() ![]() ![]() ![]() ![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次