名校
解题方法
1 . 如图,在直三棱柱
中,
是边长为2的正三角形,
,N为棱
上的中点,M为棱
上的动点,过N作平面ABM的垂线段,垂足为点O,当点M从点C运动到点
时,点O的轨迹长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/3e385d3a-d4ac-41b4-9bc4-bcafe1d81a15.png?resizew=214)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/3e385d3a-d4ac-41b4-9bc4-bcafe1d81a15.png?resizew=214)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-06-27更新
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879次组卷
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5卷引用: 福建省南平市政和县第一中学2022-2023学年高一下学期期中质量检测数学试题
名校
2 . 在四棱锥
中,
,
,
平面
,
分别为
的中点,
.
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37444a4da006d26dd252bee7c6cecf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff70a54a149a15fb96b7e1e8406c98ae.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb46aaae98bce8e66848e09c2c1cdbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9801cabc43c024b9c5fac34b7db5d69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5617a404c5a3356753136e5a6b6d51e5.png)
您最近一年使用:0次
2022-06-14更新
|
6049次组卷
|
6卷引用:福建省福州第三中学2020-2021学年高二下学期期中考试数学试题
福建省福州第三中学2020-2021学年高二下学期期中考试数学试题四川省南充市嘉陵第一中学2022-2023学年高二下学期期中文科数学试题(已下线)专题25 二面角相关问题训练-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)山西省朔州市平鲁区李林中学2022-2023学年高一下学期期末数学试题四川省江油市太白中学2023-2024学年高二上学期入学考试数学试题专题05 空间直线、平面的垂直-《期末真题分类汇编》(新高考专用)
名校
解题方法
3 . 如图所示几何体中,平面
平面
,△PAD是直角三角形,
,四边形
是直角梯形,
,
, 且
,PA=AB=2.
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983530540892160/2996090784997376/STEM/a7c5feba-9aa3-44ab-81a1-a42c398ec331.png?resizew=211)
(1)试在AB上确定一点E,使得平面
平面
,并说明理由;
(2)求证:
平面
;
(3)在线段
上是否存在点
,使得
,若存在,求
的值;若不存在,请说明理由.
![](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/85c5ace226a547e68702df548b08cb5a.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/5001c688de2c2fb3a95a89e743e39504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab3e77f23abd20f637b70e6b1125d30.png)
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983530540892160/2996090784997376/STEM/a7c5feba-9aa3-44ab-81a1-a42c398ec331.png?resizew=211)
(1)试在AB上确定一点E,使得平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e68df194252bc68d1ebe51eb6c0f83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230773e239052ba228224f9a81cbb2b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e98eb6db9c24321307c445af89a855.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed46a014ece6a0830c7c8b8deb2c56e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
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2022-06-07更新
|
679次组卷
|
2卷引用:福建省三明市四地四校2021-2022学年高一下学期期中联考数学试题
名校
解题方法
4 . 《九章算术》中将底面为直角三角形且侧棱垂直于底面的三棱柱称为“堑堵”;底面为矩形,一条侧棱垂直于底面的四棱锥称之为“阳马”;四个面均为直角三角形的四面体称为“鳖臑”.如图在堑堵ABC−A1B1C1中,AC⊥BC,且AA1═AB═2.下列说法正确的是( )
A.四棱锥![]() ![]() |
B.若平面![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.四棱锥![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-06-07更新
|
1773次组卷
|
8卷引用:福建省三明市四地四校2021-2022学年高一下学期期中联考数学试题
福建省三明市四地四校2021-2022学年高一下学期期中联考数学试题(已下线)第02讲 玩转立体几何中的角度、体积、距离问题-2022年暑假高一升高二数学衔接知识自学讲义(人教A版2019)辽宁省丹东市凤城市第一中学2021-2022学年高一下学期6月月考数学试题辽宁省六校2022-2023学年高二上学期期初考试数学试题(已下线)2023年四省联考平行卷湖南省娄底市新化县第一中学2022-2023学年高二上学期期末线上测试数学试题(已下线)专题1 鳖臑阳马 巧用性质 练(已下线)广东省深圳市深圳中学2024届高三二轮四阶测试数学试题
名校
解题方法
5 . 如图,三棱柱
中,侧面
底面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9310633a22af4da82a09b18732f9d5e.png)
分别为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895473594368/2989868850429952/STEM/bc7a3904-bb51-4983-bbbe-b3657c0a4d5b.png?resizew=248)
(1)求证:
;
(2)求三棱柱
的体积;
(3)在直线
上是否存在一点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
平面
.若存在,求出
的长;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a2e10a5aebe40a9018d5ee3ade7af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebecda934e81b946ed4f6f163098993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9310633a22af4da82a09b18732f9d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fdf6f784f618a70fb4768f74aa970b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895473594368/2989868850429952/STEM/bc7a3904-bb51-4983-bbbe-b3657c0a4d5b.png?resizew=248)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6d5f85aedd049d78ffd0f5ad60fe9c.png)
(2)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次
2022-05-29更新
|
748次组卷
|
7卷引用:福建省莆田市仙游县2019-2020学年高三上学期期中数学(文)试题
福建省莆田市仙游县2019-2020学年高三上学期期中数学(文)试题北京市海淀区2018届高三第一学期期末文科数学试题(已下线)2018年高考二轮复习测试专项【新课标文科】热点八 几何体的表面积与体积的求解北京市海淀区2018届高三上学期期末考试数学(文)试题北京市通州区潞河中学2022届高三三模数学检测试题北京卷专题20空间向量与立体几何(解答题)(已下线)专题20 空间几何解答题(文科)-3
名校
解题方法
6 . 如图所示,在四棱锥中
,
,
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c72921fecf4ff29018f3bebaa01ff7b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978577357905920/2981276207833088/STEM/937233d3-e547-43c4-b175-f53a39e70611.png?resizew=233)
(1)求证:平面
平面
;
(2)已知点
是线段
上的动点(不与点
、
重合),若使二面角
的大小为
,试确定点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ba2021caf4381dad4f73474912a8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e28b6a0398d826bfc7b45fc2b06d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5ea309886e947ea7cb4b81716206fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c72921fecf4ff29018f3bebaa01ff7b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978577357905920/2981276207833088/STEM/937233d3-e547-43c4-b175-f53a39e70611.png?resizew=233)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b77a5c3865855fbb3d24f9522ced8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf126ef95080e8caa2b862122ab5d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2022-05-17更新
|
439次组卷
|
4卷引用:福建省泉州科技中学2023-2024学年高二上学期期中考试数学试题
福建省泉州科技中学2023-2024学年高二上学期期中考试数学试题江苏省徐州市铜山区2021-2022学年高二下学期期中数学试题广东省深圳市南头中学2022-2023学年高二上学期期中模拟数学试题(已下线)专题1.11 空间角的向量求法大题专项训练(30道)-2022-2023学年高二数学举一反三系列(人教A版2019选择性必修第一册)
名校
7 . 在四棱锥
中,底面ABCD是菱形,
,
平面ABCD,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/0b8ff67d-f743-4128-acf5-3928c2b0d02f.png?resizew=164)
(1)求证:
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/0b8ff67d-f743-4128-acf5-3928c2b0d02f.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1636b4530c0b42d0e0b649e90e3b9e85.png)
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2022-05-12更新
|
552次组卷
|
3卷引用:福建省三明第一中学2021-2022学年高一下学期期中学段考试数学试题
名校
8 . 已知正方体
的棱长为2,点E,F,G分别为
的中点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606771539968/2978047272697856/STEM/01598576-0aa7-4520-8f1e-3ac7c00165d3.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473ce0e22c4edc6ef768e0c12f59e483.png)
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606771539968/2978047272697856/STEM/01598576-0aa7-4520-8f1e-3ac7c00165d3.png?resizew=161)
A.![]() |
B.![]() |
C.平面AEF截正方体所得的截面面积为![]() |
D.平面AEF截正方体所得上下两部分几何体体积之比为![]() |
您最近一年使用:0次
9 . 在直四棱柱
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974151856185344/2974475951661056/STEM/a5958052-bba8-4d5d-abe2-2bfa7f496173.png?resizew=190)
(1)求证:
平面
;
(2)求点D到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ed7d8c00c471dc4e466854c761e73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974151856185344/2974475951661056/STEM/a5958052-bba8-4d5d-abe2-2bfa7f496173.png?resizew=190)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263d398159c7433838b714a9a75d61e5.png)
(2)求点D到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96872cd6cd581ae8a861c7032e0257b4.png)
您最近一年使用:0次
2022-05-07更新
|
1448次组卷
|
7卷引用:福建省厦门市湖滨中学2023届高三上学期期中考试数学试题
解题方法
10 . 在棱长为1的正方体
,点B到平面
的距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
您最近一年使用:0次