名校
解题方法
1 . 正方体
,
是棱的中点,在任意两个中点的连线中,与平面
平行的直线有几条( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/a4508abb-894c-41c2-9e1a-08d1f1d798e2.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007299bf8a6ace6a71a4b3b143933bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/a4508abb-894c-41c2-9e1a-08d1f1d798e2.png?resizew=193)
A.36 | B.21 | C.12 | D.6 |
您最近一年使用:0次
名校
2 . 已知四棱柱
的底面是平行四边形,过此四棱柱任意两条棱的中点作直线,其中与平面
平行的直线共有( )条
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f332eb13e2379aeedb236434947a8f.png)
A.4 | B.6 | C.10 | D.12 |
您最近一年使用:0次