名校
1 . 如图,已知直角梯形
与等腰梯形
所在的平面互相垂直,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/4dc54344-37dc-46bd-a3cf-994321cf6a9e.png?resizew=179)
(1)证明:
;
(2)求二面角
的余弦值;
(3)判断直线
与平面
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68dfd32a77c3615069ad1e7eb5b226a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c62cca87325b32db22204f7cfa6cbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6240d83351b156ab5a8c0e2a9f0e277c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0da7cbc970d76b70d21407da8d1df3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/4dc54344-37dc-46bd-a3cf-994321cf6a9e.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d05b5b9502c2be337f9be84fe4ed.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41861a8201bf8378a05a09ae0bd84635.png)
(3)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
2 . 如图,已知斜四棱柱
,底面
为等腰梯形,E为线段
的中点,四边形
为菱形,点
到底面
的距离为
,且
为线段
的中点.
(1)证明:
平面
;
(2)求二面角
的平面角的余弦值.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bd6d4abeb59a060a34b354548e7451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/81358819-b4d4-416e-8925-ce83b49457c6.png?resizew=246)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a8e0c5bcf2d86726cd9f561b8ff5fe.png)
您最近一年使用:0次
2024-01-03更新
|
150次组卷
|
2卷引用:河南省青桐鸣2023-2024学年高二上学期12月联考数学试题
名校
解题方法
3 . 如图,在几何体
中,
平面
.
平面
;
(2)若
,在棱
上是否存在一点
,使得
与平面
所成角的正弦值为
?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3f8093c3291e5dbaf47346fd8c5e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afca2f194676ece0c9db7696843c9676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318c74e8263b9533180c413608d1836d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642a7dd471434c923f76809dfa5ee183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f7c1fd715395858fef59913b8d9262.png)
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2024-01-03更新
|
1411次组卷
|
7卷引用:河南省TOP二十名校2024届高三上学期调研考试九数学试卷
河南省TOP二十名校2024届高三上学期调研考试九数学试卷广东省佛山市第一中学2024届高三上学期第二次调研数学试题湖北省黄石市部分学校2023-2024学年高二上学期期末联考数学试卷(已下线)专题05 空间向量与立体几何(分层练)(四大题型+21道精选真题)(已下线)2024年高考数学全真模拟卷03(已下线)重难点12 立体几何必考经典解答题全归类【九大题型】(已下线)广东省佛山市第一中学2024届高三上学期第二次调研数学试题变式题17-22
名校
解题方法
4 . 如图,设正方体
的棱长为
,点
是
的中点,点
为空间内两点,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d7ef454aa07765aeea22895988b2fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0130321c5392fba6973f9e78e5b531c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/39469988-c744-442e-9211-6b5157956797.png?resizew=160)
A.若![]() ![]() ![]() ![]() |
B.设![]() ![]() ![]() |
C.平面![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2024-01-03更新
|
1469次组卷
|
4卷引用:河南省TOP二十名校2024届高三上学期调研考试九数学试卷
河南省TOP二十名校2024届高三上学期调研考试九数学试卷广东省广州市广东实验中学2024届高三上学期大湾区数学冲刺卷(四)广东省汕头市金山中学2024届高三上学期第一次模拟考试数学试题(已下线)模块7 空间几何篇 第2讲:立体几何的截面问题【练】
名校
5 . 如图,在三棱柱
中,
,
,平面
平面
.
(1)求证:
;
(2)若
,三棱锥
的体积为18,点
在棱
上,且
,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/b974ad626070408fc3be09975a47a1c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5e4b7d5f72a2a44e0833155f4854f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/205fa143-5d5a-486b-a138-496f1bc05253.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003a97711c5ed89f10594e0aedcabfa8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68b4beefade8076bea97d01c0251fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38593653bedb845ecfa820806a29a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc578cdb83e89405fb12052e5d503e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b43d280eca53ee6a3661bebb6d23a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
解题方法
6 . 如图,在三棱柱
中,
,
,
,
是线段
上的点,且
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/4ea5586a-0d41-4a61-9ec2-9c7bd545d56a.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6eb2c0c1b3f47e344a4d0c49286a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af2626608f61a4cfbb86494bd6df0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487179b3b9fe9fed6b432b44f560a29e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/4ea5586a-0d41-4a61-9ec2-9c7bd545d56a.png?resizew=171)
A.![]() | B.![]() |
C.![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2023-12-29更新
|
394次组卷
|
2卷引用:河南省新高中创新联盟TOP二十名校计划2024届高三上学期11月调研考试数学试题
名校
7 . 在直四棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/7564e755-d1e1-4085-8873-2354846050d1.png?resizew=157)
(1)证明:平面
平面
.
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a726bd948d894e13b70fbae0d96957.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/7564e755-d1e1-4085-8873-2354846050d1.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0fbd88fdb064072eedd136e9cb41ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
您最近一年使用:0次
2023-12-29更新
|
255次组卷
|
2卷引用:河南省驻马店市部分学校2024届高三上学期期末联考数学试题
8 . 如图1,梯形
中,
,过
,
分别作
,
,垂足分别为
、
.若
,
,
,将梯形
沿
,
折起,且平面
平面
(如图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/44a7ff66-294e-43ea-bd1d-548ba66dcf2f.png?resizew=332)
(1)证明:
;
(2)若
,在线段
上是否存在一点
,使得直线
与平面
所成角的正弦值为
,若存在,求出
的长,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ff7bf8ffc8a04186e3e13c1a6d5ced.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/1fe38a76667fa89be7cafe65266aa65a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/44a7ff66-294e-43ea-bd1d-548ba66dcf2f.png?resizew=332)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e39b13d187b25461d85a3b8d10c7b678.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c7e72ef83184b96b12a51daf32c220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743c08870d66a766fa25298adf4dbf89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次
名校
9 . 在棱长为2的正方体
中,
,点M为棱
上一动点(可与端点重合),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88961cc1ea9e81bd1a76dddb2ce2276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.当点M与点A重合时,![]() ![]() |
B.当点M与点B重合时,![]() |
C.当点M为棱![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2023-12-27更新
|
420次组卷
|
5卷引用:河南省青桐鸣2023-2024学年高二上学期12月联考数学试题
名校
10 . 如图,在四棱锥
中,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e800b64fbd8e88227aa9fae21b17e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
为侧棱
上一点,平面
与侧棱
交于点
,且
与底面
所成的角为
.
为线段
的中点;
(2)求平面
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e800b64fbd8e88227aa9fae21b17e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c37f9335a34431fe824a565f473c146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60890bdc19f2361513582894836ca54b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2023-12-26更新
|
204次组卷
|
4卷引用:河南省部分重点中学2023-2024学年高二上学期12月质量检测数学试题