已知正方体
的棱长为4,
为空间中一动点,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.点![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
更新时间:2024-01-20 13:07:55
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【推荐1】已知正方体
的边长为2,E为正方体内(包括边界)上的一点,且满足
,则下列说正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/f86afb8b-7ad2-42f4-af3a-7490630db816.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8374a540227b8851ddfff976f73afe04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/f86afb8b-7ad2-42f4-af3a-7490630db816.png?resizew=183)
A.若E为面![]() ![]() |
B.过AB作面![]() ![]() ![]() |
C.若F,G分别为![]() ![]() ![]() |
D.若F,G分别为![]() ![]() ![]() ![]() ![]() |
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【推荐2】如图,已知四棱锥
的底面
是直角梯形,
,
,
,
平面
,
,下列说法正确的是( )
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.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/81981fd7b343f4fe2db8f36eb66c1ce7.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.平面![]() ![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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【推荐1】在棱长为2的正方体
中,点
满足
,其中
,
,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/2f6168a14ce666e3212158413e428f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb6bf23a5a12e1ba5413594d7b1a57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558f134032cd487914aef62fe1b7d208.png)
A.平面![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
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【推荐2】已知正方体
的棱长为2,点M,N分别为棱
的中点,点
为四边形
(含边界)内一动点,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53e1d6a86a36dd76b41004af795d901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7967ac1132d836e6a2ca6af5790521.png)
A.![]() ![]() |
B.点![]() ![]() |
C.存在点![]() ![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
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【推荐1】如图,正方体
的棱长为2,点
是线段
的中点,点
是正方形
所在平面内一动点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/21/fa33e3f5-16ea-4dd9-ad16-6517766084f3.png?resizew=174)
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/21/fa33e3f5-16ea-4dd9-ad16-6517766084f3.png?resizew=174)
A.若点![]() ![]() ![]() |
B.若点![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
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【推荐2】已知正方体
的棱长为1,点
为侧面
内一点,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/e168672b47d7e64dc1b404f8882c7dcf.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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【推荐3】如图,在正方体
中,
,点M在正方体内部及表面上运动,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
A.若M为棱![]() ![]() ![]() |
B.若M在线段![]() ![]() ![]() |
C.当M与![]() ![]() ![]() ![]() |
D.若M在线段![]() ![]() ![]() |
您最近一年使用:0次