名校
1 . 如图,在三棱柱
中,侧面
是菱形,且
,平面
平面
,
,
,O为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/6/1/2475176207646720/2480894989836288/STEM/8f3c3b92-8326-4f15-9369-3e698aad4199.png?resizew=232)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1c28f4604d8b7baa8f17a042e8956f.png)
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd57614136e2fc269f698a9c3904e31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37199965a41feed17c44f208b029945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2879880d7d25341a07729b6dd598e4aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/2020/6/1/2475176207646720/2480894989836288/STEM/8f3c3b92-8326-4f15-9369-3e698aad4199.png?resizew=232)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1c28f4604d8b7baa8f17a042e8956f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74262b3b5ef44a90e51e1d2c94436a97.png)
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2020-06-09更新
|
161次组卷
|
3卷引用:广东省阳春市第一中学2019-2020学年高二下学期月考四数学试题
名校
2 . 如图,等腰梯形ABCD中,AB∥CD,AD=AB=BC=1,CD=2,E为CD中点,以AE为折痕把△ADE折起,使点D到达点P的位置(P∉平面ABCE).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/0ee48d4b-53dd-41be-814f-4b9d28a8cb23.png?resizew=424)
(1)证明:AE⊥PB;
(2)若直线PB与平面ABCE所成的角为
,求二面角A﹣PE﹣C的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/0ee48d4b-53dd-41be-814f-4b9d28a8cb23.png?resizew=424)
(1)证明:AE⊥PB;
(2)若直线PB与平面ABCE所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
您最近一年使用:0次
2020-06-15更新
|
2163次组卷
|
16卷引用:广东省惠州市2019-2020学年高三第三次调研考试理科数学试题
广东省惠州市2019-2020学年高三第三次调研考试理科数学试题广东省七校联合体2023届高三上学期11月第二次联考数学试题【市级联考】辽宁省大连市2019届高三第一次模拟考试数学(理)试题重庆市渝中区巴蜀中学2019-2020学年高三“一诊”模拟测试卷数学(理)试题湖南省长沙市长郡中学2020届高三下学期第一次高考模拟理科数学试题(已下线)数学-6月大数据精选模拟卷05(海南卷)(满分冲刺篇)湖北省华中师范大学第一附属中学2019届高三下学期5月押题理科数学试题湘豫名校联考2020届高三数学(理科)6月模拟试题江西省丰城中学、高安二中等六校2021届高三1月联考数学(理)试题湖北省武汉市华师一附中2020届高三下学期5月押题理科数学试题(已下线)专题19 立体几何综合-2020年高考数学母题题源全揭秘(浙江专版)四川省南充市白塔中学2020-2021学年高三下学期5月考试数学(理)试题四川省成都市青白江区2022-2023学年高三上学期"零点五诊"理科数学试题四川省成实外教育集团2022-2023学年高三下学期联考(二)理科数学试题四川省宜宾市叙州区第一中学2022-2023学年高二上学期期末模拟数学(理)试题湖北省武汉市新洲区部分学校2023-2024学年度高二上学期期末质量检测数学试卷
名校
3 . 如图,在四棱锥
中,
,底面
为边长为
的菱形,且
.
![](https://img.xkw.com/dksih/QBM/2019/12/25/2369715018768384/2419606883303424/STEM/e7e4feb6357341caa9328928b6721aff.png?resizew=243)
(1)证明:
;
(2)若
,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/f14f698605a196cf83ccba6a601d0e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://img.xkw.com/dksih/QBM/2019/12/25/2369715018768384/2419606883303424/STEM/e7e4feb6357341caa9328928b6721aff.png?resizew=243)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cd5c4f8b106d01e0e431078e1a468b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
4 . 如图所示,四棱锥
中,底面
是平行四边形,
平面
,
,
,
是
中点,点
在棱
上移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/c919aec0-c857-4408-a3d0-3d9a7778c68b.png?resizew=173)
(1)若
,求证:
;
(2)若
,当点
为
中点时,求
与平面
所成角的大小.
![](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/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/c919aec0-c857-4408-a3d0-3d9a7778c68b.png?resizew=173)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a395778dcf588264f40e1cd8c96206d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e90f9f4e44173888a54c624852064a.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
2020-01-04更新
|
493次组卷
|
4卷引用:广东省梅州市大埔县虎山中学2021-2022学年高一下学期5月第二次段考数学试题
广东省梅州市大埔县虎山中学2021-2022学年高一下学期5月第二次段考数学试题(已下线)【新东方】杭州高三数学试卷262浙江省“9+1”高中联盟2019-2020学年高三上学期期中数学试题(已下线)第8章 立体几何初步 章末综合检测 -2021-2022学年高一数学同步备课 (人教A版2019 必修第二册)
5 . 如图,正三角形ABE与菱形ABCD所在的平面互相垂直,
,
,M是AB的中点,N是CE的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/54feadb5-9bf7-4f84-974d-f73d90d8fa75.png?resizew=233)
(1)求证:
;
(2)求证:
平面ADE;
(3)求点A到平面BCE的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/54feadb5-9bf7-4f84-974d-f73d90d8fa75.png?resizew=233)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6865234f10d17195c7ca60d62e7b69a1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a02695cd69ff39af9e1423ec5fdb1f4.png)
(3)求点A到平面BCE的距离.
您最近一年使用:0次
2019-10-08更新
|
2126次组卷
|
2卷引用:广东省台山市华侨中学2020届高三级10月模考文科数学试题
6 . 已知在三棱锥
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/078c5af6-d62c-43a2-bccf-bf5a7015ca9c.png?resizew=138)
(1)求证:
;
(2)若
,
,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1af71094b0522a0df6c7fae1580e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dbe55407b556be48d67cde5c5dc94f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/078c5af6-d62c-43a2-bccf-bf5a7015ca9c.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96127e45e2dd2494fccb1c0905951f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f0f9487303d04e6914b29ae805a0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a4bddf1ea3c5d37f2233a4821909e9.png)
您最近一年使用:0次
7 . 如图所示,已知ABCD是直角梯形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6b28c949-b57a-4359-925b-e65c7bdce20b.png?resizew=174)
(1)证明:
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fba58c1ecfb2e650da339b7f30d99a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6b28c949-b57a-4359-925b-e65c7bdce20b.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b183492677d0457b8701c53d9fa1414.png)
您最近一年使用:0次
2019-06-05更新
|
436次组卷
|
3卷引用:广东省揭阳市产业园2019-2020学年高一上学期期末数学试题
8 . 如左图,平面五边形
中,
,
,将△
沿
折起,得到如右图的四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/d7db16bd-f00e-4e5e-820d-ccb641492a13.png?resizew=358)
(1)证明:
;
(2)若平面
平面
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7b0d00cbe53f9bbdb464a1c8c5e59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e413f89893a9b2e24d2a9d1c00e00f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/d7db16bd-f00e-4e5e-820d-ccb641492a13.png?resizew=358)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebfe6fda511e39f72ba2519f4da31c9.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2c4cc37d6ba218107c9c5d820740fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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
9 . 如图甲,⊙
的直径
,圆上两点
在直径
的两侧,使
,
.沿直径
折起,使两个半圆所在的平面互相垂直(如图乙),
为
的中点,
为
的中点.
为
上的动点,根据图乙解答下列各题:
![](https://img.xkw.com/dksih/QBM/2015/7/10/1572178130649088/1572178136727552/STEM/a10e8e1796914503b4a7bbc2a37982c3.png)
(1)求点
到平面
的距离;
(2)求证:不论点
在何位置,都有
⊥
;
(3)在
弧上是否存在一点
,使得
∥平面
?若存在,试确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bddb90e3606387c047807ee4cec379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefb8568cff65e8ae19e27a2b769017f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2015/7/10/1572178130649088/1572178136727552/STEM/a10e8e1796914503b4a7bbc2a37982c3.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求证:不论点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
真题
名校
10 . 如图2,四边形
为矩形,
平面
,
,
,作如图3折叠,折痕
.其中点
、
分别在线段
、
上,沿
折叠后点
在线段
上的点记为
,并且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/2f16de95-a474-4b1a-800f-7d9265067e48.png?resizew=364)
(1)证明:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b5a0816e54cef8e861e3a5dcb801b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06772d7ccc921f77319c503c23326be2.png)
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2019-01-30更新
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9卷引用:2014年全国普通高等学校招生统一考试文科数学(广东卷)
2014年全国普通高等学校招生统一考试文科数学(广东卷)广东省佛山市顺德区第一中学2019-2020学年高二上学期期中数学试题四川省成都市龙泉第二中学2017届高三5月高考模拟考试(一)数学(理)试题(已下线)专题22 空间几何体及其表面积与体积-十年(2011-2020)高考真题数学分项四川省新津中学2020-2021学年高三9月月考数学(文)试题甘肃省兰州大学附属中学2021-2022学年高三上学期第五次月考数学(文科)试题江西省临川一中暨临川一博中学2021-2022学年高二下学期第二次月考数学(文)试题陕西省咸阳市秦都区2021-2022学年高一上学期期末数学试题(已下线)专题23 立体几何解答题(文科)-2