解题方法
1 . 如图,在直棱柱
中,底面
是菱形,
,
,
,
,
分别是棱
,
的中点.
;
(2)求证:
平面
;
(3)是否存在正数
,使得平面
平面
?若存在,求
的值;若不存在,说明理由
![](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/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666dc2a5188fa45948bb6e772685ac1d.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417104247ce266ae42c3a9860f387272.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(3)是否存在正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a148a5584e41408fc74f8bd386b5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥
中,
平面PAD,
,E,F,H,G分别是棱PA,PB,PC,PD的中点.
;
(2)判断直线EF与直线GH的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aade3d5cbfd7ab6a8595b29716a52a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.png)
(2)判断直线EF与直线GH的位置关系,并说明理由.
您最近一年使用:0次
2022-07-07更新
|
1150次组卷
|
8卷引用:北京市海淀区2021-2022学年高一下学期期末练习数学试题
北京市海淀区2021-2022学年高一下学期期末练习数学试题北京市顺义区牛栏山第一中学2022-2023学年高一下学期6月月考数学试题北京市第八十中学2022-2023学年高一下学期期中考试数学试题北京高一专题09立体几何(已下线)8.4.2 空间点、直线、平面之间的位置关系(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)核心考点06空间点、直线、平面的位置关系-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)(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06 空间中点线面的位置关系6种常考题型归类(1)-期期末真题分类汇编(北京专用)
名校
解题方法
3 . 如图所示,四棱锥
的底面
是直角梯形,
,
底面
,过
的平面交
于
,交
于
(
与
不重合).
![](https://img.xkw.com/dksih/QBM/2022/6/25/3009084157558784/3009565271080960/STEM/5eb7b27151df48288cd5eb7bb7f13b87.png?resizew=203)
(1)求证:
;
(2)求证:平面
平面
;
(3)如果
,求此时
的值.
![](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/6717b95bb188128fdd3fe6434682178c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ebb1c11dd20fdd67c3dfe9a1f9dea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2022/6/25/3009084157558784/3009565271080960/STEM/5eb7b27151df48288cd5eb7bb7f13b87.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8fb4b5afd9999b210f1bab1a0854d13.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3f843b83e62bab294988a7ea134a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47548785e478bc5b9591341a881e3127.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,已知在四棱锥
中,底面
是平行四边形,
为
的中点,在
上任取一点
,过
和
作平面
交平面
于
.
![](https://img.xkw.com/dksih/QBM/2022/6/8/2996963430260736/2998264787140608/STEM/46c2e4c38db54249a85c697061079e9d.png?resizew=183)
(1)求证:
平面
;
(2)求证:
平面
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1b63ff147840a325bfd8653136b05d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838132d6d6d5177def1270bddeee3d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://img.xkw.com/dksih/QBM/2022/6/8/2996963430260736/2998264787140608/STEM/46c2e4c38db54249a85c697061079e9d.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6ef7306c5965dbe4d0259102d6b74c.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,在三棱锥
中,
平面ABQ,
,D,C,E,F分别是AQ,BQ,AP,BP的中点,
,PD与EQ交于点G,PC与FQ交于点H,连接GH.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/f4e1ac5e-0ae6-469a-b04d-f6337bdabeba.png?resizew=207)
(1)求证:
;
(2)求平面PAB与平面PCD所成角的余弦值;
(3)求点A到平面PCD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f2424a84016755afad47abdda10368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babb70c72c9bbdb0f22551cb07a12336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f050e3398d871f314cd8fa58fb5336fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/f4e1ac5e-0ae6-469a-b04d-f6337bdabeba.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899e0f38f927624c17b1df9a28865393.png)
(2)求平面PAB与平面PCD所成角的余弦值;
(3)求点A到平面PCD的距离.
您最近一年使用:0次
2022-06-02更新
|
645次组卷
|
2卷引用:北京市西城区北京师范大学附属实验中学2022届高三下学期热身练习数学试题
名校
解题方法
6 . 如图,三棱柱
中,面
面
,
.过
的平面交线段
于点
(不与端点重合),交线段
于点
.
为平行四边形;
(2)若
到平面
的距离为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425dbda940137a78a109969e66665487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70d708336d4f15e7fca0b26acb353b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bbb740f8bc13b4be8ca4dc0aef5442.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27039783266a69df2a96ea0c36cbdcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27039783266a69df2a96ea0c36cbdcd5.png)
您最近一年使用:0次
2022-05-30更新
|
1452次组卷
|
7卷引用:中国人民大学附属中学2022届高三5月适应性练习数学试题
名校
解题方法
7 . 如图,四棱锥
中,底面ABCD为平行四边形,E是PD上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/03f28427-70af-4bac-9c6e-b862903850f7.png?resizew=203)
(1)若E、F分别是PD和BC中点,求证:
平面PAB;
(2)若
平面AEC,求证:E是PD中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/03f28427-70af-4bac-9c6e-b862903850f7.png?resizew=203)
(1)若E、F分别是PD和BC中点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
您最近一年使用:0次
2022-05-15更新
|
2020次组卷
|
6卷引用:北京市陈经纶中学2022-2023学年高一下学期期中诊断数学试题
名校
8 . 如图,平面
平面
,
,
,
、
分别为
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973020650250240/2973066283712512/STEM/efcb6143-5336-47f0-aeb9-d433a84cd0aa.png?resizew=195)
(1)设平面
平面
,判断直线l与
的位置关系,并证明;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fcc2aba06dbc28f39d111a10233ff12.png)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973020650250240/2973066283712512/STEM/efcb6143-5336-47f0-aeb9-d433a84cd0aa.png?resizew=195)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a09d03d26008b17d89e98125eff110c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ec9b338626862ba20cadc1af53c3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564743a1fe463a981f06914e3cb5e03e.png)
您最近一年使用:0次
2022-05-05更新
|
1684次组卷
|
6卷引用:北京市东城区2022届高三二模数学试题
解题方法
9 . 阅读下面题目及其解答过程.
以上题目的解答过程中,设置了①~⑤五个空格,如下的表格中为每个空格给出了两个选项,其中只有一个符合推理,请选出符合推理的选项,并填写在答题卡的指定位置(只需填写“A”或“B”).
如图,已知正方体![]() ![]() (Ⅰ)求证: ![]() (Ⅱ)求证:直线 ![]() ![]() 解:(Ⅰ)如图,连接 ![]() 因为 ![]() 所以 ![]() ![]() 所以①___________. 因为四边形 ![]() 所以②__________. 因为 ![]() 所以③____________. 所以 ![]() (Ⅱ)如图,设 ![]() ![]() ![]() 假设 ![]() ![]() 因为 ![]() ![]() ![]() ![]() 所以⑤__________. 又 ![]() 这样过点 ![]() ![]() ![]() 所以直线 ![]() ![]() |
空格序号 | 选项 |
① | A.![]() ![]() |
② | A.![]() ![]() |
③ | A.![]() ![]() ![]() ![]() |
④ | A.![]() ![]() |
⑤ | A.![]() ![]() ![]() |
您最近一年使用:0次
2022-03-11更新
|
703次组卷
|
2卷引用:北京市第一次普通高中2022届高三学业水平合格性考试数学试题
名校
10 . 如图,矩形
和梯形
,
,
,平面
平面
,且
,
,过
的平面交平面
于
.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932740014153728/2933079853506560/STEM/02ff7d9b80ed436baeddbe7977aa0716.png?resizew=211)
(1)求证:
;
(2)当
为
中点时,求点
到平面
的距离;
(3)若平面
与平面
的夹角的余弦值为
,求
的值.
![](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/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25eff69a4a0dc7a7ab183843303d333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bebae04c72b934bfbbf0b4d01f164f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a951292add4574c1debd16800674e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932740014153728/2933079853506560/STEM/02ff7d9b80ed436baeddbe7977aa0716.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7138d41bbee1ed2d7c5f86546a225c2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe38c885f29722c433022c4b2ae6211.png)
(3)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe38c885f29722c433022c4b2ae6211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd8a98e03f6bb5601c91e72e9102e44.png)
您最近一年使用:0次
2022-03-10更新
|
937次组卷
|
3卷引用:北京平谷区2022届高三零模数学试题