名校
解题方法
1 . 在棱长为1的正方体
中,E,F分别是棱
,BC的中点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2023/5/17/3239906875383808/3241599062261760/STEM/742bcde5ed32430bad102615bf47c117.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/2023/5/17/3239906875383808/3241599062261760/STEM/742bcde5ed32430bad102615bf47c117.png?resizew=153)
A.点P在对角面![]() |
B.点Q在棱![]() ![]() |
C.若正方体的截面过线段EF中点且与EF垂直,则该截面是四边形 |
D.若点R在平面![]() ![]() ![]() |
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