1 . 如图,三棱柱
中,侧棱垂直底面,
,
,D是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/9f8aae6f-aaa9-47e8-9672-4aabadd00afe.png?resizew=124)
1
证明:
平面BDC
2
平面
分此棱柱为两部分,求这两部分体积的比
3
画出平面
与平面ABC的交线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82862a3ea06d5c719ac26406d19f4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988080d3c6c2054e3c939edac4fcb1ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c640abbdc470479407da1ae2aa80fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/9f8aae6f-aaa9-47e8-9672-4aabadd00afe.png?resizew=124)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e4c7ff1df9fe11f746c507c6f90584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361ba681e1c611ef91f4374374062914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361ba681e1c611ef91f4374374062914.png)
您最近一年使用:0次
2 . 如图所示,在三棱锥
中,
,
,
两两垂直,
,
,点
为
的中点.
(1)若过点
的平面与直线
垂直,分别与棱
,
相交于点
,在图中画出该截面多边形,并说明
点的位置(不要求证明);
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d55095cd1376f1714a918b3f78371db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572538005495808/1572538011222016/STEM/d8149bbb99db4810b0959f60f43a15a1.png?resizew=317)
您最近一年使用:0次
2016-12-04更新
|
1153次组卷
|
4卷引用:人教A版 全能练习 必修2 模块结业测评(一)