在三棱锥
中,
,
,
,M,N,P,Q分别为棱AB,CD,AD,BC的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8893e696893ba57318c8c0225b80db1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1f0690d47cac82c8d27e10c8444d57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773cdf3f01ad5709dd9e9cec1de273c5.png)
A.直线MN是线段AB和CD的垂直平分线 |
B.四边形MQNP为正方形 |
C.三棱锥![]() ![]() |
D.经过三棱锥![]() ![]() |
更新时间:2022-08-14 12:53:51
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【推荐1】已知四棱锥
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