1 . 如图,在长方体
中,底面ABCD是正方形,E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/693d1490-711e-41ed-84ab-32bd1ee2708f.png?resizew=116)
(1)证明:
平面BDE;
(2)证明:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/693d1490-711e-41ed-84ab-32bd1ee2708f.png?resizew=116)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557a368725226f2c8ea2efb7d30e478.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3547a914468b082d8d8741b974a03190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e84d6e368f8368f8301c4cd66d6dd.png)
您最近一年使用:0次
名校
解题方法
2 . 如图所示,四棱锥
的底面
为正方形,顶点P在底面上的射影为正方形的中心
为侧棱
的中点.
(1)求证:
平面
;
(2)若
,四棱锥
的体积为
,求
与平面
所成角.
![](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/62e7f10e0c8af2d0d02a685f6f19e329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/21/4e79b73c-2753-4438-a35c-e72842bc8e75.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292b791c7cf21c172e6e7f97f04be176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
您最近一年使用:0次
2023-09-21更新
|
978次组卷
|
4卷引用:新疆柯坪县柯坪湖州国庆中学2023届高三上学期期末考试数学(理)试题
解题方法
3 . 如图,在四棱雉
中,底面
是正方形,
,
,点
,
分别为线段
,
的中点.
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](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/292f891706b88aa7af3eebc4c1cbf9a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c656a1d0532dd79ef1e61c807b7f6d1.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/25/ef0589e5-4910-4ceb-bfc7-a9f9719a4205.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c0089d8eb23cb703c5278aff214cd2.png)
您最近一年使用:0次
名校
4 . 在四棱锥
中,E为棱AD的中点,PE⊥平面
,
,
,
,
,F为棱PC的中点.
(1)求证:
平面
;
(2)若二面角
为
,求直线
与平面
所成角的正切值.
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ac29b5b40502851b7a24f7ebcc0b28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd8e8c759858fb3d3132605d44e865.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/e58d7955-983f-4ce0-908a-2e62e1e81ea2.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea81cfad5da39884e84d257149d7f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2024-01-14更新
|
533次组卷
|
7卷引用:新疆喀什地区岳普湖县2022届高三第一次模拟考试数学(文)试题
新疆喀什地区岳普湖县2022届高三第一次模拟考试数学(文)试题山西省大同市第一中学校2021-2022学年高二上学期10月月考数学试题广东省茂名市第五中学2021-2022学年高二上学期期中数学试题江苏省扬州市高邮市第一中学2021-2022学年高三上学期期中模拟数学试题(已下线)专题08 立体几何解答题常考全归类(精讲精练)-2(已下线)第一章 空间向量与立体几何(压轴必刷30题4种题型专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)山东省济宁市第一中学2024届高三上学期期末数学试题
名校
5 . 如图,在三棱锥
中,
底面
,
.点
分别为棱
的中点,
是线段
的中点,
,
.
(1)求证:
平面
;
(2)已知点
在棱
上,且直线
与直线
所成角的余弦值为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b9a4cf42189f9ef786b3c549ecd93e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55928df632fc6f2b88a44afe37e5a4e9.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/487b14c446e989c68d0e148cc557dbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/19/05cd7f1a-fd9f-4844-9665-df2cbec5cb6c.jpg?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d2abf13c2842f58654abf73c6b4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e468f168f3657d84d44be5eb89a62d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
您最近一年使用:0次
解题方法
6 . 如图,在正方体
中,
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/8c1f6bab-504d-4110-bcbd-fb7ef0bac04a.png?resizew=149)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2023-08-05更新
|
785次组卷
|
11卷引用:新疆兵团地州学校2022-2023学年高二上学期期中联考数学试题
新疆兵团地州学校2022-2023学年高二上学期期中联考数学试题河南省创新联盟2022-2023学年高二上学期第一次联考数学试卷(A卷)河北省保定市部分学校2022-2023学年高二上学期第一次月考数学试题内蒙古2022-2023学年高三上学期10月大联考数学(文科)试题内蒙古赤峰实验中学2023届高三上学期10月月考数学(文)试题(已下线)第七章 立体几何与空间向量 第五节 空间向量与线、面位置关系(A素养养成卷)安徽省怀宁县高河中学2023-2024学年高二上学期第一次月考数学试题(已下线)专题01 空间向量与立体几何(2)(已下线)专题04用空间向量研究直线、平面的位置关系(4个知识点6种题型2个易错点)(1)(已下线)1.4.1 用空间向量研究直线、平面的位置关系【第二练】(已下线)专题04 空间中的点、直线、平面与空间向量5种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)
名校
解题方法
7 . 在棱长为2的正方体
中,M为
中点,N为四边形
内一点(含边界),若
平面
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4da530384dd04ac90a025385e8b3c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bed4be4c6552807ba53018fe99ec742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f239fbcc58fc15535db4b5084c4f7253.png)
A.![]() | B.三棱锥![]() ![]() |
C.线段![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2023-02-02更新
|
385次组卷
|
7卷引用:新疆部分学校2023届高三上学期第一次联考数学(理)试题
新疆部分学校2023届高三上学期第一次联考数学(理)试题慕华优策联考2022-2023学年高三第一次联考理科数学试题江苏省扬州中学教育集团树人学校2022-2023学年高三上学期期末数学试题上海奉贤区致远高级中学2022-2023学年高二下学期期中数学试题(已下线)模块五 期末重组篇 专题6(已下线)第11章 简单几何体(压轴必刷30题专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)期中真题必刷压轴50题专练-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)
名校
8 . 如图,正三棱柱
中,D是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/8472e092-2492-4566-a4d3-e8c2c0f3cb13.png?resizew=145)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4639a9dc0bc99101cbde59fef04b4a2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/8472e092-2492-4566-a4d3-e8c2c0f3cb13.png?resizew=145)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1006895256aad863fb283f5ecd1793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
您最近一年使用:0次
2023-01-12更新
|
568次组卷
|
6卷引用:新疆阿勒泰地区2022-2023学年高二上学期期末联考数学试题
新疆阿勒泰地区2022-2023学年高二上学期期末联考数学试题广东省广州空港实验中学2022-2023学年高二上学期期末数学试题湖南省长沙市浏阳市第一中学2022-2023学年高二下学期入学考试数学试题重庆市乌江新高考协作体2023-2024学年高二上学期期中学业质量联合调研抽测数学试题广东省江门市鹤山市纪元中学2023-2024学年高二上学期期中数学试题(已下线)期末真题必刷常考60题(32个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
9 . 如图,三角形
所在的平面与长方形
所在的平面垂直,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/97f1be33-df43-4655-bb89-99d92bb03df6.png?resizew=193)
(1)证明:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c219d61264775f02bc18ca0276a9238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/97f1be33-df43-4655-bb89-99d92bb03df6.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求点
![](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
解题方法
10 . 如图,在直三棱柱
中,
,E为
的中点,F为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/11/2/3101160789360640/3102278856802304/STEM/67755079c1a64c7eab5dc1c2b5487aa3.png?resizew=212)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)若
,求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2022/11/2/3101160789360640/3102278856802304/STEM/67755079c1a64c7eab5dc1c2b5487aa3.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96a6b20a35af7755e5d90789ea862da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2022-11-04更新
|
617次组卷
|
2卷引用:新疆维吾尔自治区乌鲁木齐市第101中学2023届高三上学期12月月考理科数学试题