解题方法
1 . 在长方体
中,
,动点P满足
,
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7ad41c55fab640a159a08a12c6b03c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c17994d49afe725871b0065befd92a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4caeb095e0f8caf72f7067c8d33556.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() |
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2 . 在正四棱柱中,已知
是棱
的中点,
是对角线
的中点,设
是正四棱柱
的面上的动点,且
平面
,则动点P围成的图形的周长为
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2023-11-14更新
|
203次组卷
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3卷引用:上海市宝山区上海师大附属罗店中学2023-2024学年高二上学期第二次诊断调研数学试题
名校
3 . 如图,在四棱锥
中,底面
是边长为2的正方形,侧面
为等边三角形,顶点
在底面上的射影在正方形
外部,设点
,
分别为
,
的中点,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/ffdd15f5-0ccd-4389-a1d5-8442287af7e6.png?resizew=187)
(1)证明:
平面
;
(2)若四棱锥
的体积为
,设点
为棱
上的一个动点(不含端点),求直线
与平面
所成角的正弦值的最大值.
![](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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/ffdd15f5-0ccd-4389-a1d5-8442287af7e6.png?resizew=187)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbbe7f48676298f2ee0cb1901992eaf.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c9298da3cd8b9db58692e0173f3fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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2023-11-11更新
|
339次组卷
|
3卷引用:山东省菏泽市第一中学2023-2024学年高二上学期第三次月考数学试题
解题方法
4 . 已知直三棱柱
中,
,
,
,P是
的中点,Q在棱
上,且
,M在棱
上,若
平面
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4f0c1c9cca0555906d8a53e1a6803d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15f5185a728d4bed89cd57d09048a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e287fea8870402cd485337c6e6d2eb3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e377c69a2fb1c3ed366bb6d8bb57100.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-11更新
|
791次组卷
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7卷引用:安徽省六安市毛坦厂东部新城校区2023-2024学年高二上学期10月阶段性考试数学试题
安徽省六安市毛坦厂东部新城校区2023-2024学年高二上学期10月阶段性考试数学试题(已下线)专题7.2 空间中的位置关系【十大题型】(已下线)第八章 立体几何初步(二)(知识归纳+题型突破)(1)-单元速记·巧练(人教A版2019必修第二册)单元测试B卷——第八章?立体几何初步(已下线)11.3.3平面与平面平行-同步精品课堂(人教B版2019必修第四册)(已下线)8.5.3 平面与平面平行-同步精品课堂(人教A版2019必修第二册)(已下线)6.4 .2 平面与平面平行-同步精品课堂(北师大版2019必修第二册)
名校
解题方法
5 . 在长方体
中,
,点
为棱
上靠近点
的三等分点,点
是长方形
内一动点(含边界),且直线
与平面
所成角的大小相等,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1baa492b87c78b80b9a58e24e67fc50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1df2faa0daa28eedee5a708f53eff3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/d9dc7cb3-ac2a-45bd-94cc-4c0d69915e5f.png?resizew=160)
A.![]() ![]() | B.三棱锥![]() |
C.不存在点![]() ![]() | D.线段![]() ![]() |
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6 . 如图,正方体
的棱长为
分别是棱
的中点,过直线
的平面分别与棱
交于
.设
,以下正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd110e5d9ab042968ec706b44e78572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e86e3991200297ad172455e5ea93f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ced0d1d92d5a2b2432695cb37689249.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/1627c529-2125-475e-8cae-d48061dd6cb2.png?resizew=165)
A.平面![]() ![]() |
B.当且仅当![]() ![]() |
C.四边形![]() ![]() |
D.四棱锥![]() ![]() |
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名校
解题方法
7 . 如图,在长方体
中,
,
,
为
的中点,过
的平面
分别与棱
,
交于点E,F,且
,则截面四边形
的面积为______ .
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352d5bb010209b795946f7095418115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d918361b03a48660dbd5987cd7a7a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/1ba5035a-2ed6-4490-8ce2-fa4e66db4a0b.png?resizew=146)
您最近一年使用:0次
名校
解题方法
8 . 如图,正方体
的棱长为2,点
是线段
的中点,过点
做平面
,使得平面
平面
,则平面
与正方形
的交线的长度为______ .
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414844edd458857bdfc80bffa61cbf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
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2023-10-24更新
|
611次组卷
|
5卷引用:四川省南充市仪陇县仪陇中学校2023-2024学年高二上学期10月月考数学试题
四川省南充市仪陇县仪陇中学校2023-2024学年高二上学期10月月考数学试题8.5.3平面与平面平行练习(已下线)第10讲 8.5.3 平面与平面平行-【帮课堂】(人教A版2019必修第二册)(已下线)专题19 平面与平面平行-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)11.3.3 平面与平面平行-【帮课堂】(人教B版2019必修第四册)
名校
解题方法
9 . 过平面外一点,可以作这个平面的平行线的条数是( )
A.1条 | B.2条 | C.超过2条但有限 | D.无数条 |
您最近一年使用:0次
名校
10 . 如图,
是三棱锥
的高,
,
,E是
的中点.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
平面
;
(2)若
,
,
.
①求二面角
所成平面角的正弦值;
②在线段
上是否存在一点M,使得直线
与平面
所成角为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/69e8805a-ae67-4882-8081-b0a2cb4f11e6.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efea2119d6394d8b34e7b58e5306ce06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764829cc2c763b6aca0665aa143e304e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3015db5ca1f49bb7bad43657e06863ed.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53eab3d46050258e079f1bcfced25c0e.png)
②在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b489c25405ce48699d4f0a62820bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
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