已知三棱锥
三条侧棱
两两互相垂直,且
,
分别为该三棱锥的内切球和外接球上的动点,则
两点间距离的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b4c1ae9c57d51e27bbdb001122d3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高三上·广东江门·阶段练习 查看更多[2]
更新时间:2021-12-12 06:24:18
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【知识点】 多面体与球体内切外接问题
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单选题
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较难
(0.4)
名校
【推荐1】如图所示,在棱锥
中,底面
是正方形,边长为
,
.在这个四棱锥中放入一个球,则球的最大半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/ece43391-f5ea-4ddf-917d-dc0150724e53.png?resizew=139)
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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较难
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解题方法
【推荐2】在五面体
中,底面
为矩形,
,
和
均为等边三角形,
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
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