名校
1 . 已知
、
是两个不同的平面,
、
是两条不同的直线,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.若![]() ![]() ![]() ![]() | B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-02-18更新
|
399次组卷
|
9卷引用:山西省太原市2021届高三三模数学(理)试题
山西省太原市2021届高三三模数学(理)试题湖南省长沙市雅礼中学2020-2021学年高一下学期5月第三次月考试题江西省抚州市黎川县第一中学2020-2021学年高一下学期期末数学(文)试题贵州省贵阳市普通中学2023届高三上学期期末监测考试数学(文)试题(已下线)专题8.17 立体几何初步全章综合测试卷(基础篇)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)模块二 专题3《立体几何初步》单元检测篇 B提升卷(已下线)模块二 专题5《立体几何初步》单元检测篇 B提升卷(人教B)(已下线)模块二 专题5《立体几何初步》单元检测篇 B提升卷(北师大版)湖南省株洲市炎陵县2022-2023学年高二下学期期末数学试题
名校
解题方法
2 . 已知:在四棱锥
中,底面
为正方形,侧棱
平面
,点M为
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/0b71fdcf-0541-4fd6-a9b3-fb5f5ba60dd0.png?resizew=165)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角大小;
![](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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbe8961cca9440ea334ee049d109146.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/0b71fdcf-0541-4fd6-a9b3-fb5f5ba60dd0.png?resizew=165)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9332d230f25309248ff2a6161f060229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2023-03-10更新
|
991次组卷
|
8卷引用:山西省长治市上党区第一中学校2021-2022学年高二上学期9月月考数学试题
名校
解题方法
3 . 如图,在四棱锥
中,底面
直角梯形,
是等边三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2a94f90c-4020-4a25-948a-be433c36b28b.png?resizew=209)
(1)若
,证明:平面
平面
;
(2)若平面
平面
,求平面
与平面
所成锐二面角的余弦值.
![](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/09e5aeebe0ab7864801ce935630c0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058953fc3ed0af5ddd0a44ef687f2c8d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2a94f90c-4020-4a25-948a-be433c36b28b.png?resizew=209)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d50a68fed1c23837d1267bdda5c1962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2021-12-23更新
|
682次组卷
|
4卷引用:山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测理科数学试题
山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测理科数学试题山西省吕梁市名校金科大联考2022届高三上学期12月月考数学(理)试题湖南省三湘名校教育联盟2021-2022学年高三上学期第二次大联考数学试题(已下线)2020年高考全国1数学理高考真题变式题16-20题
解题方法
4 . 如图,在四棱锥
中,底面
直角梯形,
,
,
是等边三角形,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/12/21/2877407610167296/2878777354461184/STEM/3d34b892-39b4-4b13-88f9-d937eb1d5720.png?resizew=353)
(1)设平面
平面
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
平面
;
(2)若
,求证:平面
平面
.
![](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/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93b4787448ee5858e81109cc208b7b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12d565cb0801c5e3025d2a030182a2e.png)
![](https://img.xkw.com/dksih/QBM/2021/12/21/2877407610167296/2878777354461184/STEM/3d34b892-39b4-4b13-88f9-d937eb1d5720.png?resizew=353)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a09d03d26008b17d89e98125eff110c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747e7c4b2f940a9f0a7300a5d0f11cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d50a68fed1c23837d1267bdda5c1962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2021-12-23更新
|
370次组卷
|
2卷引用:山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测文科数学试题
名校
解题方法
5 . 如图,在三棱柱
中,四边形
为矩形,
,
,点E为棱
的中点,
.
![](https://img.xkw.com/dksih/QBM/2021/11/25/2858973959184384/2859636686659584/STEM/f8f10794056c49599443e11a9701ec1d.png?resizew=187)
(1)求证:平面
平面
;
(2)求平面AEB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/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bfdc3ed1111f2603f33f58a161d758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c5b2dcbc4826df1c1857f50b85767f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://img.xkw.com/dksih/QBM/2021/11/25/2858973959184384/2859636686659584/STEM/f8f10794056c49599443e11a9701ec1d.png?resizew=187)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求平面AEB与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea86090c412d8ab5f1e5f974329319ce.png)
您最近一年使用:0次
2021-11-26更新
|
1259次组卷
|
8卷引用:山西省运城市2021-2022学年高二上学期11月期中检测数学试题
山西省运城市2021-2022学年高二上学期11月期中检测数学试题广东省梅州市三校(蕉岭中学、虎山中学、平远中学)2021-2022学年高二上学期11月联考数学试题甘肃省白银市会宁县2021-2022学年高二上学期期末质量检测数学(理)试题山东省青岛市青岛第一中学2022-2023学年高二上学期期中数学试题辽宁省锦州市辽西育明高级中学2022-2023学年高二上学期期中数学试题黑龙江省大庆实验中学实验二部2022-2023学年高一下学期期末考试数学试题(已下线)高二上学期期末【常考60题考点专练】(选修一+选修二)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)浙江省杭州高级中学2021-2022学年高二上学期期末数学试题
6 . 已知在四棱锥
中,底面
为菱形,
平面
分别为
的中点,点
在棱
上移动.
![](https://img.xkw.com/dksih/QBM/2021/11/21/2856290267447296/2857328677593088/STEM/bb8bbc2e-c062-48ef-a59f-9ada7c90bde8.png?resizew=264)
(1)证明:无论
在棱
上如何移动都有平面
平面
;
(2)若
,在线段
上是否存在一点
,使得二面角
的正弦值为
.若存在,试确定
的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5c044e1f89e113f1f4f63cf60c7518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84db0e7e60f8b5b9eb6016e1ff1d40b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266a45d9900154d94d896bca6cb7873c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19935e386ac54c8257a4b9ea0bd9d7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2021/11/21/2856290267447296/2857328677593088/STEM/bb8bbc2e-c062-48ef-a59f-9ada7c90bde8.png?resizew=264)
(1)证明:无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced3d3dd6af84fb052fc7281d707853e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce747dfba7cd1b8054a3fc741629f257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
7 . 如图,在四棱锥
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/68466e5f-60be-492b-918d-5cb2a08b7732.png?resizew=164)
(1)求证:平面
平面
;
(2)在线段
上是否存在异于P,C的一点M,使平面
与平面
夹角的余弦值为
?若存在,求出点M的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0857fe163cf4f926bbbca31ac1d255.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/68466e5f-60be-492b-918d-5cb2a08b7732.png?resizew=164)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,平面
平面
,
,
,
是边长为
的等边三角形,
是以
为斜边的等腰直角三角形.
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833567223308288/2836942310637568/STEM/9986c41d-9a7f-4d49-bb41-7239f0c913ca.png?resizew=253)
(1)证明:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b55ba8d91894b03c228a001eafaf9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833567223308288/2836942310637568/STEM/9986c41d-9a7f-4d49-bb41-7239f0c913ca.png?resizew=253)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ad6a0124359e8b9f7649cf0bff51ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2021-10-25更新
|
873次组卷
|
7卷引用:山西大学附属中学校2022届高三上学期期中数学(理)试题
解题方法
9 . 平行四边形ABCD中(图1),
,
,将
以BD为折痕折起,使得平面
平面BCD,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/073df8d0-aa69-4280-a187-e3816c0ccd08.png?resizew=375)
(1)证明:平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e90beb1c2ec9ee9ef9f879e2c6521a.png)
(2)M为线段
上靠近
的三等分点,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdf6426f0eaa95c31648895d35fe165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4e4a162f12d12a082b8d8fdd1aeab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe052786101dfcc941480919eb2cecc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/073df8d0-aa69-4280-a187-e3816c0ccd08.png?resizew=375)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d138354c4e021ac8ae2a2fb176ca14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e90beb1c2ec9ee9ef9f879e2c6521a.png)
(2)M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64785e4401e1d79632e360fd3626ed62.png)
您最近一年使用:0次
10 . 平行四边形ABCD中(图1),∠A=60°,AB=2AD,将△ABD以BD为折痕折起,使得平面
BD⊥平面BCD,如图2.
![](https://img.xkw.com/dksih/QBM/2021/9/24/2815032841920512/2815709350641664/STEM/f9630d573aba4d76b6c72c439bc47b3c.png?resizew=401)
(1)证明:平面
BC⊥平面
BD;
(2)已知AD=1,点M为线段
C的中点,求点C到平面MDB的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://img.xkw.com/dksih/QBM/2021/9/24/2815032841920512/2815709350641664/STEM/f9630d573aba4d76b6c72c439bc47b3c.png?resizew=401)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)已知AD=1,点M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
您最近一年使用:0次
2021-09-25更新
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497次组卷
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3卷引用:山西省长治市2022届高三上学期9月质量监测数学(文)试题