如图,在正方体
中,
为棱
上的动点,
为棱
的中点,则下列选项正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/2c0ee227-5216-4db2-afbe-d0dfac65798b.png?resizew=166)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/2c0ee227-5216-4db2-afbe-d0dfac65798b.png?resizew=166)
A.直线![]() ![]() |
B.三棱锥![]() |
C.当![]() ![]() ![]() ![]() ![]() |
D.存在点![]() ![]() ![]() |
更新时间:2024-04-08 13:27:27
|
相似题推荐
多选题
|
适中
(0.65)
【推荐1】如图,已知在四棱锥
中,底面
为矩形,侧面
为等边三角形,且平面
平面
,
,
,
,
分别为
,
的中点,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/12/ded02975-d377-455f-abbf-ac4bb8e66340.png?resizew=190)
A.![]() ![]() | B.三棱锥![]() ![]() |
C.二面角![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
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解题方法
【推荐2】如图是四棱锥
的平面展开图,四边形
是矩形,
.在四棱锥
中,M为棱
上一点(不含端点),则下列说法正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/f29b188f-4f44-4285-939a-3a121327520c.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e0a20c9616658eadb94c25e93b3052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/f29b188f-4f44-4285-939a-3a121327520c.png?resizew=185)
A.![]() ![]() |
B.存在点M,使得![]() |
C.四棱锥![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
【推荐1】已知正方体
的棱长为6,点
分别是棱
的中点,
是棱
上的动点,则( )
![](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/7c4f409aa1d8abb7fe8d781c3951de02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.直线![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.平面![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
多选题
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【推荐2】如图,棱长为4的正方体
的内切球为球
,
、
分别是棱
和棱
的中点,
在棱
上移动,则下列结论成立的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/a2d68d03-05f8-47b2-9cc0-1293129d481e.png?resizew=160)
A.存在点![]() ![]() |
B.对于任意点![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.过直线![]() ![]() ![]() |
您最近一年使用:0次
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(0.65)
名校
【推荐3】如图,在正方体
中,
,
,
分别为
,
,
的中点,则以下结论正确的是( )
![](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/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
A.![]() |
B.平面![]() ![]() |
C.![]() ![]() |
D.异面直线![]() ![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐1】正方体
的棱长为2,
为底面
的中心,
为棱
上的动点(不包含两个端点),则下列命题中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/14/33f1a2e8-5fbb-4505-b06b-b4e06076ea2c.png?resizew=154)
A.存在点![]() ![]() ![]() | B.存在点![]() ![]() ![]() |
C.存在点![]() ![]() | D.存在点![]() ![]() ![]() ![]() |
您最近一年使用:0次
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名校
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【推荐2】香囊,又名香袋、花囊,是我国古代常见的一种民间刺绣工艺品,香囊形状多样,如图1所示的六面体就是其中一种,已知该六面体的所有棱长均为2,其平面展开图如图2所示,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/32ea6c4a-2fbe-4cd1-a0ab-96d2ab55b1ad.png?resizew=277)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/32ea6c4a-2fbe-4cd1-a0ab-96d2ab55b1ad.png?resizew=277)
A.AB⊥DE | B.直线CD与直线EF所成的角为45° |
C.该六面体的体积为![]() | D.该六面体内切球的表面积是![]() |
您最近一年使用:0次
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解题方法
【推荐1】已知空间向量
,
,
构成的平面记为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3475d6a1cb27cf459b96c2875aad60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be6dc9cc45055ef50badc3dbe7c382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.向量![]() ![]() |
B.向量![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.向量![]() ![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐2】已知正方体
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.直线![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次