名校
解题方法
1 . 已知在三棱锥P﹣ABC中,
,
,平面
平面
.若点
分别为
的中点,点
为三棱锥
表面上一动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239b038c44b3d1b3c80084b5a2aa6fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef19f98e86ae7504671413780b3b1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/28/b21e9e63-8141-406b-ac3a-02c0a28f5874.png?resizew=166)
A.若![]() ![]() |
B.若![]() |
C.若点N在棱AC上,则![]() |
D.三棱锥P﹣ABC的外接球的表面积为![]() |
您最近一年使用:0次