名校
1 . 已知正方体
的棱长为2,过棱
的中点
作正方体的截面,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
A.该正方体外接球的表面积是![]() |
B.若截面是正六边形,则直线![]() |
C.若截面是正六边形,则直线![]() |
D.若截面过![]() ![]() |
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名校
解题方法
2 . 如图,在棱长为2的正方体
中,M,N分别是
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/222d76a3-4880-449a-b491-f061077999e6.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8befa3a8f3880668c5ff01dd0e62141.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/222d76a3-4880-449a-b491-f061077999e6.png?resizew=185)
A.四点A,M,N,C共面 |
B.直线![]() ![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.过M,B,C三点的平面截正方体所得图形面积为![]() |
您最近一年使用:0次
2023-02-18更新
|
467次组卷
|
2卷引用:安徽省宿州市泗县第一中学2022-2023学年高二下学期开学考试数学试题
名校
解题方法
3 . 如图,正方体
的棱长为
,
为
的中点,
为
的中点,则( )
![](https://img.xkw.com/dksih/QBM/2023/1/10/3149649183268864/3151953205256192/STEM/fc03b721e18b4abe8ad15c836a878c07.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2023/1/10/3149649183268864/3151953205256192/STEM/fc03b721e18b4abe8ad15c836a878c07.png?resizew=151)
A.![]() ![]() |
B.直线![]() ![]() |
C.直线![]() ![]() ![]() |
D.点![]() ![]() ![]() |
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