在正方体
中,
,点
为正方形
内部一点,点
为棱
中点,
平面
.则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/8ad469ef-eb04-48f1-b493-573bb8b61809.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadc76eecc537dec6a34ee1b2bc722c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbee3d2962bee74bf65ad4e71bca155.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/8ad469ef-eb04-48f1-b493-573bb8b61809.png?resizew=186)
A.异面直线![]() ![]() ![]() |
B.点![]() ![]() ![]() |
C.正方体![]() ![]() |
D.三棱锥![]() ![]() |
更新时间:2021-09-03 17:39:15
|
相似题推荐
多选题
|
适中
(0.65)
名校
解题方法
【推荐1】已知正方体
的棱长为2,M为
的中点,平面
过点
且与
垂直,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
A.![]() | B.![]() ![]() |
C.平面![]() ![]() | D.平面![]() ![]() |
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【推荐2】如图,已知正方体
的棱长为2,
,
分别是
,
的中点,
,
分别是线段
,
上的点,且
,
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/143ba3e1-2730-4a2c-aba9-c55c74b634a5.png?resizew=174)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2700a3103aef7c7cdb1ab54bf964639b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520b80f7aa97a9cd4b2b44a15fd4f0eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/143ba3e1-2730-4a2c-aba9-c55c74b634a5.png?resizew=174)
A.三棱锥![]() ![]() |
B.![]() |
C.平面![]() ![]() |
D.三棱锥![]() ![]() |
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解题方法
【推荐1】已知直三棱柱
的所有顶点都在球
的球面上,
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f0c6e0046eace8c05d2e262d7514c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
A.球![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
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【推荐2】如图,已知
是边长为4的等边三角形,D,E分别是AB,AC的中点,将
沿着DE翻折,使点A到点P处,得到四棱锥
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/6fc05dee-1435-4c42-b6ca-c60929b1eab2.png?resizew=321)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede9e40f5cf450db6f01194559a19c7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/6fc05dee-1435-4c42-b6ca-c60929b1eab2.png?resizew=321)
A.翻折过程中,该四棱锥的体积有最大值为3 |
B.存在某个点![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() |
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【推荐3】如图,在直三棱柱
中,
,
,
,
为
的中点,点
是棱
上的动点,点
是线段
上的动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/5e0316e9-1d6d-4087-b663-b23d286f1683.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/5e0316e9-1d6d-4087-b663-b23d286f1683.png?resizew=144)
A.点![]() ![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.三棱柱![]() ![]() |
D.当点![]() ![]() ![]() ![]() |
您最近一年使用:0次
【推荐1】如图,多面体ABCDEF的8个面都是边长为2的正三角形,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/531f976d-9980-4ab7-b5d7-0b602078328a.png?resizew=154)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/531f976d-9980-4ab7-b5d7-0b602078328a.png?resizew=154)
A.![]() | B.平面![]() |
C.直线EA与平面ABCD所成的角为![]() | D.点E到平面ABF的距离为![]() |
您最近一年使用:0次
【推荐2】在长方体
中,底面
是边长为4的正方形,
,过点
作平面
与
分别交于M,N两点,且
与平面
所成的角为
,给出下列说法:其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2023/6/28/3269465784262656/3269599617105920/STEM/a983d68db3da42158a2e7938d5d08e2c.png?resizew=255)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7fc746f8c4801d8f2f0471ba3297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/2023/6/28/3269465784262656/3269599617105920/STEM/a983d68db3da42158a2e7938d5d08e2c.png?resizew=255)
A.异面直线![]() ![]() ![]() |
B.![]() ![]() |
C.点B到平面![]() ![]() |
D.截面![]() |
您最近一年使用:0次
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解题方法
【推荐3】正方体
中,点M是线段BD上的动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.当M是BD的中点时,![]() |
B.动点M到平面![]() |
C.动点M无论在线段BD的任何位置,均满足![]() |
D.线段BD上存在点M,使得![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐1】在直四棱柱
中,已知底面为正方形,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a609e52305484ed7f87967e32161dc.png)
A.![]() ![]() |
B.直线![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
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适中
(0.65)
解题方法
【推荐2】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