名校
解题方法
1 . 已知正方体
中,P、Q分别为对角线BD、
上的点,且
.
的交线(保留作图痕迹),并求证:
平面
;
(2)若R是AB上的点,当
的值为多少时,能使平面
平面
?请给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f9abe92f0cf2354ad65698bbc45c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9abe6e8d1f4f1e8bdc46ddbae0cd789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4da530384dd04ac90a025385e8b3c2f.png)
(2)若R是AB上的点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943d6e170279d007a4c943f684b1c3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fd9020ac4827433593c1e3d503a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4da530384dd04ac90a025385e8b3c2f.png)
您最近一年使用:0次
2021-11-19更新
|
1364次组卷
|
11卷引用:上海市浦东新区南汇中学2021-2022学年高二上学期10月月考数学试题
上海市浦东新区南汇中学2021-2022学年高二上学期10月月考数学试题(已下线)高二数学上学期【第一次月考卷】(测试范围:第10~11章)-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第一册)(已下线)第01讲 空间直线与平面(核心考点讲与练)(2)(已下线)10.4 平面与平面平行(第1课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020必修第三册)(已下线)第10课时 课后 空间中平面与平面的平行(已下线)8.5空间直线、平面的平行C卷(已下线)8.5 空间直线、平面的平行(已下线)第08练 点线面的位置关系-2022年【暑假分层作业】高一数学(苏教版2019必修第二册)(已下线)第30讲 平面与平面平行(已下线)8.5.3 平面与平面平行 (精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)8.5空间直线、平面的平行——课后作业(提升版)
名校
解题方法
2 . 如图,菱形ABCD的边长为1,
,O为平面ABCD外一点,
平面ABCD,
,M,N分别为OA与BC的中点.
![](https://img.xkw.com/dksih/QBM/2021/10/18/2832122891632640/2834005324513280/STEM/002c8f43-640c-4e36-8ad2-199791ab52c9.png?resizew=256)
(1)证明:
平面OCD;
(2)求异面直线AB与MD所成角的大小;
(3)求点B到平面OCD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6baf49925a5bcb359b542d45067c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4317430d5a2b61d9a2a88b73e7d7ad39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://img.xkw.com/dksih/QBM/2021/10/18/2832122891632640/2834005324513280/STEM/002c8f43-640c-4e36-8ad2-199791ab52c9.png?resizew=256)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
(2)求异面直线AB与MD所成角的大小;
(3)求点B到平面OCD的距离.
您最近一年使用:0次
3 . 用中文表述直线与平面平行的判定定理,并加以证明.
您最近一年使用:0次
2021-10-13更新
|
153次组卷
|
5卷引用:上海市位育中学2021-2022学年高二上学期10月月考数学试题
上海市位育中学2021-2022学年高二上学期10月月考数学试题(已下线)第04讲线线、线面、面面平行的判定与性质(核心考点讲与练)(3)上海市某中学2021-2022学年高二上学期期末数学试题(已下线)期末真题必刷基础60题(35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(沪教版2020必修第三册)(已下线)10.3 直线与平面平行的判定定理(第1课时)
名校
解题方法
4 . 已知在正方体
中,M,N,P分别为
,AD,
的中点,棱长为1,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/6dd0ce7b-65de-4cb0-a748-9748619a0fd5.png?resizew=173)
(1)求证:
平面
;
(2)过M,N,P三点作正方体的截面,画出截面(保留作图痕迹),并计算截面的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/6dd0ce7b-65de-4cb0-a748-9748619a0fd5.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e5e2ba78a5b1dd0f39bb65d2a0a0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)过M,N,P三点作正方体的截面,画出截面(保留作图痕迹),并计算截面的周长.
您最近一年使用:0次
5 . 如图,正方形
所在平面与平面四边形
所在的平面互相垂直,
是等腰直角三角形,
.
![](https://img.xkw.com/dksih/QBM/2021/10/8/2824912123494400/2827730694840320/STEM/2392f1a6286740a1af92813a88a38df7.png?resizew=299)
(1)求证:
平面
;
(2)设线段
的中点分别为
,求证:
平面
;
(3)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/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf112ba82b604bd600aee3f24c3e555.png)
![](https://img.xkw.com/dksih/QBM/2021/10/8/2824912123494400/2827730694840320/STEM/2392f1a6286740a1af92813a88a38df7.png?resizew=299)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dc9e9e855fae6e82d93972ff611283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0497a2b843caeaeb1825e33c5819d84e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e076c4c39e0591ed69ff780fb5a1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b123303738a595ec0126beb0fa64a8.png)
您最近一年使用:0次
名校
解题方法
6 . 四棱锥
中,底面
为矩形,
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/9/27/2817376822771712/2824767928164352/STEM/f99aa6d9c7be4292a4771462f4c1ade7.png?resizew=182)
(1)证明:
平面
;
(2)设
,
,求
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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2021/9/27/2817376822771712/2824767928164352/STEM/f99aa6d9c7be4292a4771462f4c1ade7.png?resizew=182)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeebf4871df8fd4f5be3aab6f94faea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2021-10-08更新
|
608次组卷
|
4卷引用:上海市徐汇中学2021-2022学年高二上学期9月月考数学试题
上海市徐汇中学2021-2022学年高二上学期9月月考数学试题四川省眉山市彭山区第一中学2021-2022学年高二上学期10月月考数学(理)试题(已下线)第04讲线线、线面、面面平行的判定与性质(核心考点讲与练)(3)上海市南汇中学2023-2024学年高二上学期期中数学试题
解题方法
7 . 正方体ABCD-A1B1C1D1中,E、F分别是BB1,CC1的中点,
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691084149923840/2808489585729536/STEM/7ade02ee-fea8-40bb-a7a6-6f8ccf28ae62.png?resizew=211)
(1)证明:直线AE∥平面DCC1D1
(2)求异面直线AE和BF所成角的大小.(结果用反三角函数值表示)
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691084149923840/2808489585729536/STEM/7ade02ee-fea8-40bb-a7a6-6f8ccf28ae62.png?resizew=211)
(1)证明:直线AE∥平面DCC1D1
(2)求异面直线AE和BF所成角的大小.(结果用反三角函数值表示)
您最近一年使用:0次
解题方法
8 . 如图,在正方体
中,E、F分别为棱AD、AB的中点.求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/252091a4-7625-4655-a0e4-421558906368.png?resizew=151)
您最近一年使用:0次
9 . 如图1,在直角梯形
中,
,
,且
,现以
为一边向梯形外作正方形
,然后沿边
将正方形
翻折,使
,
为
的中点,如图2.
![](https://img.xkw.com/dksih/QBM/2021/6/16/2744371237044224/2803776941023232/STEM/73bc771f-6e4a-4584-b89a-4a6c489021ef.png?resizew=605)
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0046177466c78f08d45449dc5639bf38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3da6e90f9c9617cd495abb57ab9b0e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://img.xkw.com/dksih/QBM/2021/6/16/2744371237044224/2803776941023232/STEM/73bc771f-6e4a-4584-b89a-4a6c489021ef.png?resizew=605)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac480d8d9d7821b62a603cf5cfda236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309e58bf083bad13abd549720a63a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
您最近一年使用:0次
2021-09-08更新
|
583次组卷
|
5卷引用:上海市奉贤区致远高级中学2021-2022学年高二上学期10月评估数学试题
21-22高二上·浙江·期末
名校
10 . 如图,在正三棱柱
与四棱锥
组成的组合体中,底面
恰好是边长为2菱形,且
.
![](https://img.xkw.com/dksih/QBM/2021/6/11/2740933043470336/2740967180451840/STEM/55cea27a-fda5-432a-be5d-49cd070ed532.png)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)设E是
的中点,求直线
与直线
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf57ded8dd17c973bb6cdc0e248c036c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79e3104776a75b43d0d321a367ad788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462b1c65b1b233ab98a90c164c0968c7.png)
![](https://img.xkw.com/dksih/QBM/2021/6/11/2740933043470336/2740967180451840/STEM/55cea27a-fda5-432a-be5d-49cd070ed532.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7bfc1d0b50681765bd3fa6d5920ed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)设E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
您最近一年使用:0次
2021-06-11更新
|
858次组卷
|
5卷引用:上海市嘉定区第一中学2023-2024学年高二上学期12月月考数学试题
上海市嘉定区第一中学2023-2024学年高二上学期12月月考数学试题(已下线)【新东方】在线数学162高二上(已下线)第一章 (基础过关)空间向量与立体几何 A卷-【双基双测】2021-2022学年高二数学同步单元AB卷(浙江专用)(人教A版2019选择性必修第一册)(已下线)期末模拟题(一)-2021-2022学年高二数学同步单元AB卷 (人教A版2019选择性必修第一册+第二册,浙江专用)2022年全国新高考II卷仿真模拟试卷(二)数学试题