名校
1 . 设
,
,
表示不同的直线,
,
,
表示不同的平面,给出下列四个命题,其中正确命题的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2020-09-13更新
|
1109次组卷
|
8卷引用:广东省韶关市2019-2020学年高一下学期期末数学试题
广东省韶关市2019-2020学年高一下学期期末数学试题吉林省长春市第五中学2021-2022学年高一下学期期末数学试题(已下线)专题42 空间点、直线、平面的位置关系综合练习-2021年高考一轮数学单元复习一遍过(新高考地区专用)黑龙江省佳木斯市第一中学2021-2022学年高一下学期期末考试数学试题福建省连城县第一中学2020-2021学年高一下学期第二次月考数学试卷(已下线)专题8.1 立体几何初步 章末检测1(易)-【满分计划】2021-2022学年高一数学阶段性复习测试卷(人教A版2019必修第二册)(已下线)第八章 立体几何初步(基础训练)A卷-2021-2022学年高一数学课后培优练(人教A版2019必修第二册)山东省济宁市实验中学2022-2023学年高一下学期6月月考数学试题
2 . 平面
平面
,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
2020-09-01更新
|
227次组卷
|
2卷引用:吉林省长春市第二实验中学2019-2020学年高一下学期期末考试数学试题
名校
解题方法
3 . 如图,正方体
的棱长为2,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/34293262-200e-4c06-bdc2-a7a45c8985b0.png?resizew=199)
(1)证明:
平面
;
(2)证明:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/34293262-200e-4c06-bdc2-a7a45c8985b0.png?resizew=199)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb8c3e6d8e2843a2783a409e130bc0a.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,四棱锥
的底面是边长为4的正方形,四条侧棱长均为
.点
,
,
,
分别是棱
,
,
,
上共面的四点,平面
平面
,
平面
.
(1)证明:
;
(2)设
的中心为
,连接
,证明
平面
;
(3)若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ecdaab3160da098a8f5ca525192bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a74a1536fb7546c769cdf684181b8997.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29dd8914518df1e2c2899f7fbb00336d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2736c6f5b1436863983cf84cb3d27f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a74a1536fb7546c769cdf684181b8997.png)
![](https://img.xkw.com/dksih/QBM/2020/8/12/2526491348049920/2529066759266304/STEM/d6f93c3c594d4b2a9f49282c5e01b068.png?resizew=210)
您最近一年使用:0次
名校
解题方法
5 . 如图,在四棱锥
中,底面
是边长为2的菱形,
,
为正三角形,
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4417e0b6-d12b-47fc-a875-4f9be0ccda53.png?resizew=216)
(1)证明:
平面
;
(2)若
,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/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4417e0b6-d12b-47fc-a875-4f9be0ccda53.png?resizew=216)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f6c24da3761dc6f5449929c40517cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90985b4cec465c6c3710ffe7e0ed9fae.png)
您最近一年使用:0次
2020-06-17更新
|
610次组卷
|
2卷引用:吉林省东北师范大学附属中学2020届高三第四次模拟考试数学(理)试题
名校
6 . 如图,矩形
和菱形
所在的平面相互垂直,
,
为
的中点.
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2573d44bd027ab2e2fc2472c7852af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071159cac13097ea0928285bc1be66d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2125dfe51596f77b060572f706cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502187776e34e4b76cff35e3f94f8838.png)
您最近一年使用:0次
2020-04-28更新
|
580次组卷
|
8卷引用:吉林省通化县综合高级中学2020-2021学年高二上学期期末考试数学(理)试题
名校
解题方法
7 . 如图,在四棱锥
中,四边形
为平行四边形,
,
平面
.
![](https://img.xkw.com/dksih/QBM/2020/3/29/2430039219494912/2430635854553088/STEM/7afcd99f-7ece-47da-8117-f5dbfa197865.png)
(1)证明:
;
(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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/3/29/2430039219494912/2430635854553088/STEM/7afcd99f-7ece-47da-8117-f5dbfa197865.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98823cbc09ca52df1fbcc446eba3e44f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
名校
8 . 如图,
矩形ABCD所在平面,
,M、N分别是AB、PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/c87dc48f-ec3a-49bd-8eff-1191f01efafb.png?resizew=191)
(1)求证:
平面PCD;
(2)若直线PB与平面PCD所成角的正弦值为
,求二面角N-MD-C的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/c87dc48f-ec3a-49bd-8eff-1191f01efafb.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
(2)若直线PB与平面PCD所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
您最近一年使用:0次
名校
9 . 四棱锥
与直四棱柱
组合而成的几何体中,四边形
是菱形,
,
,
,
,
交
于
,
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/40f8bbf3-2565-47a8-afe3-8668bd436ac3.png?resizew=186)
(1)证明:
平面
;
(2)动点
在线段
上(包括端点),若二面角
的余弦值为
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724625d4f91f0e48712d6d143a6389b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef8866ccf160ddc441bf69c5d3a3d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e89e99ab9c1ece0cc5c3bbabaa97de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/40f8bbf3-2565-47a8-afe3-8668bd436ac3.png?resizew=186)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e89acc2b46a2ff0e61c894c56382b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877bda7e850ca4a33e517fcf4a082b42.png)
(2)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3279affd22c319ed4d52a99a78248413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e89f1a86bb4664a827adf561788622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
您最近一年使用:0次
2020-03-15更新
|
471次组卷
|
2卷引用:吉林省梅河口市第五中学2020-2021学年高三上学期1月月考数学(理)试题
名校
解题方法
10 . 在四棱锥
中,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d906ee0d60f3f4654fb516fe4973413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27fe884b48bfa28b440fcb106794e06c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
您最近一年使用:0次
2020-02-18更新
|
161次组卷
|
2卷引用:2020届吉林省通化市梅河口市第五中学高三上学期期末数学(理)试题