解题方法
1 . 如图,在正方体
中,直线
与平面
所成的角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-02-29更新
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7卷引用:湖南省平江县第三中学等多校联考2023-2024学年高二普通高中学业水平合格性考试仿真模拟(专家卷一)数学试题
湖南省平江县第三中学等多校联考2023-2024学年高二普通高中学业水平合格性考试仿真模拟(专家卷一)数学试题(已下线)13.2.3 直线与平面的位置关系(2)-【帮课堂】(苏教版2019必修第二册)(已下线)专题8.12 立体几何初步全章综合测试卷(基础篇)-举一反三系列(人教A版2019必修第二册)(已下线)6.5.1直线与平面垂直-【帮课堂】(北师大版2019必修第二册)(已下线)8.6.2 直线与平面垂直-同步精品课堂(人教A版2019必修第二册)(已下线)专题13.4空间直线与平面的位置关系--重难点突破及混淆易错规避(苏教版2019必修第二册)(已下线)专题3.6空间直线、平面的垂直-重难点突破及混淆易错规避(人教A版2019必修第二册)
2 . 《九章算术》是我国古代的数学名著.其“商功”中记载:“正四面形棱台(即正四棱台)建筑物为方亭.”现有如图所示的烽火台,其主体部分为一方亭,将它的主体部分抽象成
的正四棱台(如图所示,其中上底面与下底面的面积之比为
,方亭的高为棱台上底面边长的3倍.已知方亭的体积为
,则该方亭的上底面边长为( )![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4ad8c2f085914eb835dd821ec84fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb65e6aca801cef5fa54435f6143b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
A.3 | B.4 | C.6 | D.12 |
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4卷引用:2024年湖南省普通高中学业水平合格性考试(压轴卷)数学试题
2024年湖南省普通高中学业水平合格性考试(压轴卷)数学试题黑龙江省鸡西市第一中学校2024届高三上学期期末数学试题(已下线)第04讲 8.3.1 棱柱、棱锥、棱台的表面积和体积-【帮课堂】(人教A版2019必修第二册)(已下线)第四章 立体几何解题通法 专题三 参数法 微点3 参数法综合训练【培优版】
解题方法
3 . 在长方体
中,
,
,
,M为
的中点,P,Q分别是直线
,
上的动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122ca7141c43c15c783968f5f0dbc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
A.三棱锥![]() | B.直线![]() ![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
解题方法
4 . 在三棱台
中,
平面ABC,
,
.
(1)证明:平面
平面
;
(2)记
的中点为M,过M的直线分别与直线
,
交于P,Q,求直线PQ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/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c062b3ea39a12795a6004dab3aa02845.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/1/571f4816-c418-467b-b52c-0e0ef1b74d60.png?resizew=200)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140088b0cb73812aa9d523c44559298a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c237015ab2c034ca97cbb3928f7f9b.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
您最近一年使用:0次
2023-09-30更新
|
550次组卷
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3卷引用:河南省青桐鸣2023-2024学年高二上学期9月大联考数学试题
解题方法
5 . 已知
中,
,
,
,
,将
沿
折起,使点A到点
处,
.
(1)证明:平面
平面
;
(2)求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8365271d3239f07360fb71e86a8cc3ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dfd76585cf7eece74fdd50acefd1ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f09a9d6f118c19854f944a8a258b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a870c29ed1505de7fc2641e6931759a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/54cda0c4-e70a-4e06-bf68-6eb71efc29fe.png?resizew=191)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a832b538d0bd5a0051d485fae371a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c87014fbb5c656a4f1892dbd88f242.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c87014fbb5c656a4f1892dbd88f242.png)
您最近一年使用:0次
解题方法
6 . 正三棱锥
的各棱长均为2,D为
的中点,M为
的中点,E为
上一点,且
,平面
交
于点Q,则截面
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937265e26003340ade57b86a4ca0f78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c9aedf70a0d7dae193ec00ca059565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1073fbecc0c0c71d742a2e19d6262455.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 在正方体
中,M,N分别为
,BC的中点,点Q为直线
上的点,且
,若
平面
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](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/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855cac1d64ebb68725caeaf68d28d51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b2ba2a78454b3c560ca893d694a227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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解题方法
8 . 如图,在空间直角坐标系中有直三棱柱
,点A,B分别在x轴、y轴上,
,平面
的一个法向量为
.
(1)求点
与
的坐标;
(2)求点O到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a60f5d069760bfe69f9cdc1b6e1e048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b32ab04dd852329d5918b177c199eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da630440d6d416f19ee22c8431c882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a010e3cb3ceff17865af1d2d16833e36.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/91c34dd7-3590-419b-89b1-081936c8898d.png?resizew=137)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)求点O到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da630440d6d416f19ee22c8431c882.png)
您最近一年使用:0次
解题方法
9 . 已知在空间直角坐标系中,
,
,
,点
在平面
内,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b32ab04dd852329d5918b177c199eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4511343c7a7c0d6bdf6a4d68f58a8c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b5c2937ee1515ae7fdad79834cfde4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe49a5474e1ff6b4fdc89794c1c96b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在四棱锥
中,底面
为矩形,平面
平面
,
,
,
,
,
分别是
,
的中点.
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7920d2550a6af7df3db60a33fe02c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58097af4081e62c2ec10c006828fa544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/74f98797-46d4-4dce-92df-f56008696c3c.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a40e279fbb77437a71f5b5fde83327.png)
您最近一年使用:0次
2023-08-12更新
|
1179次组卷
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7卷引用:四川省成都市双流区永安中学2022-2023学年高二下学期零模模拟考试数学试题