1 . 如图,在正方体
中,点M是平面
内的一动点,则三棱锥
的正视图与侧视图的面积之比为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/07d813bc-885a-476d-861b-82eb136f6102.png?resizew=261)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7826e3c6a53025324df827b39c9f7db7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/07d813bc-885a-476d-861b-82eb136f6102.png?resizew=261)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-13更新
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3卷引用:2021届青海省西宁市高三一模数学(文)试题