1 . 已知下图是四面体
及其三视图,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
的体积;
(2)求
与平面
所成的角;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2019-08-21更新
|
267次组卷
|
3卷引用:上海市复兴高级中学2019年5月高三模拟数学试题