名校
1 . 如图,在四棱锥
中,底面
是正方形,
是等边三角形,平面
平面
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/98675300-9a0b-49fe-9a1a-0940f868083c.png?resizew=175)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1c1db5140a973d87e2646d25ed4f91.png)
(2)求二面角
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/55a675310c8ba418e5a59beb7317e21e.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47891397990336f55f96bd66d367758b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/98675300-9a0b-49fe-9a1a-0940f868083c.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1c1db5140a973d87e2646d25ed4f91.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8424bdcf257367472c217c92d559f39f.png)
您最近一年使用:0次
2022-11-18更新
|
1105次组卷
|
8卷引用:重庆市南开中学校2022-2023学年高二上学期网课质量检测数学试题
名校
2 . 如图.四棱锥
的底面是矩形,
底面
.
,
.M,N分别为AB、PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/507e7fa4-18f8-46dd-aabe-821db6493d54.png?resizew=191)
(1)求证:
平面PAD;
(2)求证:
平面PCD;
(3)求平面DMN与平面DPA所成锐二面角的度数.
![](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/1cbe8961cca9440ea334ee049d109146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/507e7fa4-18f8-46dd-aabe-821db6493d54.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
(3)求平面DMN与平面DPA所成锐二面角的度数.
您最近一年使用:0次
名校
3 . 如图,在四棱锥P - ABCD中,平面PAB⊥平面ABCD,底面ABCD是平行四边形,AC = CD = 2,
,
,PC = 3.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/7481f84e-41e2-4ff6-afc8-e0f8a241e990.png?resizew=172)
(1)求证:AD⊥PC
(2)求平面PAB与平面PCD的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f29c3e772e56008790298824122792.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/7481f84e-41e2-4ff6-afc8-e0f8a241e990.png?resizew=172)
(1)求证:AD⊥PC
(2)求平面PAB与平面PCD的夹角的正弦值.
您最近一年使用:0次
2022-11-11更新
|
352次组卷
|
2卷引用:重庆市第八中学校2022-2023学年高二上学期期中数学试题
名校
解题方法
4 . 已知正三棱柱
,各棱长均为4,且点E为棱
上一动点(包含棱的端点),则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/07bb9c84-1b9b-4097-8b2d-db081701c1fc.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657191a56c0a9deb864763498935706.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/07bb9c84-1b9b-4097-8b2d-db081701c1fc.png?resizew=130)
A.该三棱柱既有外接球,又有内切球 |
B.三棱锥![]() ![]() |
C.直线![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2022-11-11更新
|
982次组卷
|
5卷引用:重庆市第八中学校2022-2023学年高二上学期期中数学试题
名校
解题方法
5 . 在四棱锥
中,底面
是矩形,
平面
,
,
,线段
的中点为
,点
为
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/294b95ba-d038-4e89-a48e-91be812807c4.png?resizew=205)
(1)求证:平面
平面
;
(2)求二面角
的正弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2753753faf2cb9a0003aa8e3945159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d3d97021a64f7a2ff5136f0836992c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/294b95ba-d038-4e89-a48e-91be812807c4.png?resizew=205)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a2712f9cc643d4983d37c9dfe880ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a7841fca64062a1f2112de9e696921.png)
您最近一年使用:0次
名校
解题方法
6 . 如图①所示,长方形
中,
,
,点
是边
靠近点
的三等分点,将△
沿
翻折到△
,连接
,
,得到图②的四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/064d0cf4-2a78-4aef-b517-bb802a20d845.png?resizew=305)
(1)求四棱锥
的体积的最大值;
(2)设
的大小为
,若
,求平面
和平面
夹角余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/064d0cf4-2a78-4aef-b517-bb802a20d845.png?resizew=305)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212e8c352c4d9b022a057d7d7fa7dd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67c89ceb040588c165ad7a8030906c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-11-08更新
|
1901次组卷
|
9卷引用:重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题
重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题3.4向量在立体几何中的应用 测试卷-2022-2023学年高二上学期数学北师大版(2019)选择性必修第一册吉林省长春市长春吉大附中实验学校2022-2023学年高三上学期第五次摸底考试数学试题河北省保定市重点高中2022-2023学年高三上学期11月期中数学试题(已下线)第11讲 第一章 空间向量与立体几何 章末题型大总结(2)(已下线)模块十一 立体几何-2(已下线)模块四 专题6 立体几何黑龙江省哈尔滨市第九中学校2024届高三上学期12月月考数学试题福建省龙岩市上杭县第一中学2024届高三上学期12月月考数学试题
名校
7 . 如图,在棱长为
的正方体
中,点
是平面
内一个动点,且满足
,则下列正确的是( )(参考数据:
,
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/3a2d054a-503f-42e6-ae95-55d2046fb511.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](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/9539f8fb13345b449274b67bbda995db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b84127f0c8f4cadd4012bc7914b6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043e9f96aaf6c5d17d1342e216a6a06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28a16615efc6b975de846bd82e4dc43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/3a2d054a-503f-42e6-ae95-55d2046fb511.png?resizew=146)
A.![]() |
B.直线![]() ![]() ![]() |
C.点![]() |
D.设直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 在正方体
中,
分别为
,
的中点,
为
侧面的中心,则异面直线
与
所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19428edbb520c8ad2f1a7f63dc805eb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-08更新
|
403次组卷
|
3卷引用:重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题
名校
解题方法
9 . 在正方体
中,棱长为2,
是底面正方形
的中心,点
在
上,
是
上靠近
的三等分点,当直线
与
垂直的时候,
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/35e875bd-6a58-44e9-8261-8e8f8a9020c6.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/35e875bd-6a58-44e9-8261-8e8f8a9020c6.png?resizew=213)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 如图,四棱锥
中,
为等边三角形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/da28ebb8-278a-4745-ab16-5c3a255d8837.png?resizew=207)
(1)证明:
;
(2)若平面
平面ABCD,且
,求平面AMD与平面PAB夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bbe4cdd2c154bd9a8073b0d4cecb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f779e7f5f53e4377b9a0a8e945d562.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/da28ebb8-278a-4745-ab16-5c3a255d8837.png?resizew=207)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c578ada7a2c0af42781fa2da18bccf0b.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8f2b0c52b2b95b06aa6ec2127950bb.png)
您最近一年使用:0次