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1 . 在空间直角坐标系中,点
关于
平面对称的点的坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664dcd44b22ab2dbf7d22f67e6c1e4d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d96461d2b3421aed548b754637ca8a.png)
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2024-02-12更新
|
412次组卷
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3卷引用:上海市闵行中学2024届高三下学期4月月考暨二模模拟考试数学试卷
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2 . 如图,在四棱锥
中,
平面ABCD,
,
,
,
,E为PD的中点,点F在PC上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/1748ab0f-33d4-4cad-8e56-a17ceb1aae3d.png?resizew=169)
求证:
平面PAD;
若平面AEF与线段PB交于点G,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a923784f083b7f4777891afe06b44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88454ace46996b99361d18e76189cdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/1748ab0f-33d4-4cad-8e56-a17ceb1aae3d.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f68b51d4182b15bbe2ff835264893f0.png)
您最近一年使用:0次