1 . 在三棱锥
中,M是线段
的中点,
,
,
,
.
(1)证明:P在平面
内的射影O为
的垂心;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3735a467f788624fe63946e0da5b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fe75f967e8915c9124a5d4ac420a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c327b3e91d8bea53255d9308a952a276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827c7d9ca8f0e06a09bd37e930b3c3ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/d44cbe49-473b-42e9-a1e4-0a171e6be968.png?resizew=156)
(1)证明:P在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
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名校
2 . 在长方体中,点
,
分别在
,
上,且
,
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6bf42c7db96104456424e4d1be6c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367bd05a164d12706243484da3c43e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
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名校
解题方法
3 . 如图,在四棱锥
中,
面
,且
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/c8482f3c-817c-4c24-8721-fc34280f59d9.png?resizew=171)
(1)求证:
平面
;
(2)在平面
内是否存在点
,满足
,若不存在,请简单说明理由;若存在,请写出点
的轨迹图形形状.
![](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/1bcf75eebbbc06b7571c869debc3db6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c98d5943239266fd56121a5a9e241ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1457d2e76a5b86de1abf121c51eb9d35.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/c8482f3c-817c-4c24-8721-fc34280f59d9.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2da5312b15f602fcb8c0ffe9ea57a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
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4 . 已知正方体
的棱长为2,
为
的中点,
为
所在平面上一动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/7c118efe-32f3-420d-9f08-26eca1266b48.png?resizew=165)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
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解题方法
5 . 如图所示,在四棱锥
中,
为等腰直角三角形,且
,四边形ABCD为直角梯形,满足
,
(1)求证
;
(2)若点E为PB的中点,点F为CD的中点,点M为棱AB上一点.当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3f47f7c8e18b5e501c9bddeda0a547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541c76819d18030fa02fcdea0696486f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/78fae179-666c-4651-b255-6fa92c4eb091.png?resizew=145)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c71dbf267939080668be464f1aa60da.png)
(2)若点E为PB的中点,点F为CD的中点,点M为棱AB上一点.当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a2d4b21832458c74b98c2f3428d509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d036bb00a4dbe069c98fa8604559c1dd.png)
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6 . 在棱长为2的正方体
中,
在线段
上运动(包括端点),下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
A.存在点![]() ![]() ![]() |
B.不存在点![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.以![]() ![]() ![]() ![]() |
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2024-03-13更新
|
630次组卷
|
4卷引用:福建省莆田市第二中学2023-2024学年高二下学期返校考试数学试卷
福建省莆田市第二中学2023-2024学年高二下学期返校考试数学试卷江苏省常州市2023-2024学年高三上学期期末学业水平监测数学试卷江苏省镇江市扬中市第二高级中学2023-2024学年高三下学期期初检测数学试题(已下线)专题06 立体几何 第二讲 立体几何中的计算问题(解密讲义)
2024高二上·江苏·专题练习
解题方法
7 . 如图,四边形
为正方形,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/b2afeb13-c88b-4a00-8f3b-7ac3b3518fd6.png?resizew=157)
(1)证明:平面
平面
;
(2)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133659fd88416259e3b99eaf5751b98d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541f54aae0dfb658ec0cd338e383cce0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/b2afeb13-c88b-4a00-8f3b-7ac3b3518fd6.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845b8505cb7b7b8df5753f52a4e00462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9111c8e64fc183a777dbe0e82c9202cd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb178784aa857d4d4683e650273f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f9801c57f2a881a807c3e85fb012f3.png)
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2024高二上·江苏·专题练习
解题方法
8 . 如图1,等腰梯形ABCD中,AD//
,E是BC的中点,将
沿AE折起,使平面
平面
(如图2),连接
,求平面
与平面
所成的锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46431c30ae4c4947ba86071f4b11ef04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036a0d3b3c70d41060bc441ddd8003fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1a1db333252089e38097637b07d22a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/9afb1fa0-ebc4-4ee3-9aca-88475a5effaf.png?resizew=341)
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解题方法
9 . 如图
,在
中,
,
于
现将
沿
折叠,使
为直二面角
如图
,
是棱
的中点,连接
、
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/5cd64df1-3cc4-45b4-838b-0c01a40232f2.png?resizew=331)
(1)证明:平面
平面
;
(2)若
,且棱
上有一点
满足
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f4fac08d887c080386bf939bfdb4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470cb205a244f5a455d623e2dd72d622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af15dbf4a5abd508e8752bf3fd1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f9ad0f53f3813d148f16e532991021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f4fac08d887c080386bf939bfdb4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3701f73add38ffeb06fb42fef55fd533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad217e26bd3580c35998109de14cef73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95226c64f0afdaa10b95ec097a0720ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a043206e1d0f1fc31e4edcb773746941.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/5cd64df1-3cc4-45b4-838b-0c01a40232f2.png?resizew=331)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8704811c9c5dba854310ae0de2ba6b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cfd630472bc73bd8c2209376dbe9d1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd270aed68cec28a22dff1cf891d8f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c2bb8c4f212a03496a8661deb2eb53.png)
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10 . 在四棱锥
中,底面
为直角梯形,
,侧面
底面
,且
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/9dd1c6bb-731a-4a7b-bd7f-f66d0c8fc966.png?resizew=173)
(1)证明:
平面
;
(2)若直线
与平面
所成的角为
,求平面
与平面
的夹角的余弦值.
![](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/68f0e48b7a6bb2836bffb57eaf2ff02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cff0c5518491ce9abc22c94a329041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa713e7c111c50a3404e12303fd6e0d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/9dd1c6bb-731a-4a7b-bd7f-f66d0c8fc966.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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