已知四棱锥P-ABCD的底面为直角梯形,
,
,PA⊥平面ABCD,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5141325bf392a10ca161423dae900438.png)
,M是棱PB上的动点.
(1)求证:CD⊥平面PAD;
(2)若
,求点M到平面ABCD的距离;
(3)当M是PB中点时,设平面ADM与棱PC交于点N,求
的值及截面ADNM的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5141325bf392a10ca161423dae900438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d28211b9d3b82dcd51f9d2d3c28337f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/57d4a3e4-09c7-4337-a7e0-40788c1a78c6.png?resizew=180)
(1)求证:CD⊥平面PAD;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a950f137d0a4711affafecfc229116a.png)
(3)当M是PB中点时,设平面ADM与棱PC交于点N,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cafe199913787a939fe9e100924023.png)
22-23高一下·上海奉贤·阶段练习 查看更多[3]
上海市奉贤中学2022-2023学年高一下学期5月月考数学试题第10章 空间直线与平面 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)(已下线)第10章 空间直线与平面(单元重点综合测试)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)
更新时间:2023-06-13 17:00:40
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【推荐1】如图所示,四棱锥P-ABCD的底面是边长为8的正方形,四条侧棱长均为2
.点G,E,F,H分别是棱PB,AB,CD,PC上共面的四点,平面GEFH⊥平面ABCD,BC∥平面GEFH.
(2)若EB=2,求四边形GEFH的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
(2)若EB=2,求四边形GEFH的面积.
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解答题-作图题
|
适中
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【推荐2】如图,等腰梯形
中
,沿
将
折起至与平面BCDE成直二面角得到一四棱锥,
为
中点,过
作平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/9f73c40e-db80-4741-8450-2222ee3c6358.png?resizew=405)
请画出平面
截四棱锥
的截面,写出作法,并求其周长;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301e714b8fe45ab97f805a16d8a66ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857912f6ec3be6b75cde6933baee4229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/9f73c40e-db80-4741-8450-2222ee3c6358.png?resizew=405)
请画出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe67036b4671b5d2a5c55b48c4d3bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
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【推荐1】如图,在四棱锥
中,底面
为菱形,
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/2020/4/25/2448957690101760/2449833671630848/STEM/4c84a62710ab4f069acc6f71aa138b0f.png?resizew=194)
(1)求证:
平面
;
(2)点
在线段
上,
,试确定
的值,使
平面
;
(3)若
平面
,平面
平面
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931bbffda5e872703c9947eccc47ede2.png)
![](https://img.xkw.com/dksih/QBM/2020/4/25/2448957690101760/2449833671630848/STEM/4c84a62710ab4f069acc6f71aa138b0f.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c51c4a1148587943fe9ba210f6141ee.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49dc833a51302057b19db5f9b6e16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ef4b918d022644e812c610a7308019.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ef4b918d022644e812c610a7308019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a773fe6d12311dc321198697eb528ba.png)
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解题方法
【推荐2】如图是由矩形
、
和菱形
组成的一个平面图形,其中
,将其沿
折起使得
与
重合,连接
,如图(2).
(1)证明:图(2)中的
四点共面,且平面
平面
;
(2)求图(2)中的四边形
的面积.
(3)求图(2)中的二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d498a0467ff3c577a7ed175d7bffd885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0da522aef3c452767df89b8d0eb62de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9176deb82d9d6d3ba27e61d9f08d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/21/bc1751f6-45cd-42b7-ba49-2137fbcbbb66.png?resizew=275)
(1)证明:图(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073e7d497e0c7b44dbb5004146b60639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693cd6179b2a92f03153ce12a0e86b95.png)
(2)求图(2)中的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3df0d9a6c83b35a863544a01f22ef7.png)
(3)求图(2)中的二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3efeca391589dee086b3e23737b898b.png)
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解题方法
【推荐1】如图,四棱锥
中,
底面
,
,
,
,
为线段
上一点,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/7/16/2507350534922240/2509795783802880/STEM/47ddbc02-7b5c-49e4-8ae9-9fceeb7528e5.png)
(1)证明:
平面
;
(2)若
,
,求点
到平面
的距离.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f14fe22376f70a50752d3e146b8e1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeef1db30212433062b3297569a7aafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2020/7/16/2507350534922240/2509795783802880/STEM/47ddbc02-7b5c-49e4-8ae9-9fceeb7528e5.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac723af1a5b32226bfd3dede2cf24f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5757f787d98f9a46777324b69ad672.png)
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解答题-证明题
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适中
(0.65)
解题方法
【推荐2】如图,在长方体
中,
,
,点
在线段
上.
;
(2)当
是
的中点时,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ddae20626f9aaac616d2a3b5d95bd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea84e9242d2667cd6a0f7436425ad418.png)
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