名校
解题方法
1 . 如图所示,在四棱锥
中,底面
是边长为4的正方形,
,点
在线段
上,
,点
分别是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/744d2351-63e3-42ff-8fa2-c33b85798193.png?resizew=189)
(1)证明:
平面
;
(2)求三棱锥
的体积.
![](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/d3e05b6d03d24f932d6df32afe14aa79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae25bdfe94839f26e9a151d33e44723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf33d73483c93f24cc6a1d76ef22ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/744d2351-63e3-42ff-8fa2-c33b85798193.png?resizew=189)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9bbc7e0de28c652ae10a8db5b4e2687.png)
您最近一年使用:0次
2022-07-02更新
|
547次组卷
|
4卷引用:新疆乌鲁木齐市第101中学2022-2023学年高一下学期期末考试数学试题
解题方法
2 . 在边长为2的正方体中,
为棱
的中点,则二面角
的正切值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d77a315b745c66c2675986ae17b83d.png)
您最近一年使用:0次
2023-08-02更新
|
198次组卷
|
3卷引用:新疆乌鲁木齐第三十一中学2022-2023学年高一下学期期末数学问卷试题
新疆乌鲁木齐第三十一中学2022-2023学年高一下学期期末数学问卷试题【市级联考】江苏省常熟市2018-2019学年高一下学期期中考试数学试题(已下线)专题突破:线线角、线面角、二面角的几何求法盘点-同步题型分类归纳讲与练(人教A版2019必修第二册)
名校
3 . 如图.正方体
中,棱长为1,
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970038011789312/2977235252658176/STEM/337db3f7-6c0b-4ee9-be15-c3cedda32b86.png?resizew=160)
(1)求证:AC⊥平面
;
(2)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970038011789312/2977235252658176/STEM/337db3f7-6c0b-4ee9-be15-c3cedda32b86.png?resizew=160)
(1)求证:AC⊥平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96946eaa2878fb8433eb2a97797a32b.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fec4fba64d1631538fb9da2c846e23.png)
您最近一年使用:0次
2022-05-11更新
|
1659次组卷
|
5卷引用:新疆克拉玛依市高级中学2021-2022学年高一年级 5 月月考数学试题
新疆克拉玛依市高级中学2021-2022学年高一年级 5 月月考数学试题福建省三明市第二中学2021-2022学年高一下学期阶段(二)考试数学试题(已下线)第04讲 空间直线、平面的垂直 (练)黑龙江哈尔滨工业大学附属中学校2021—2022学年高二下学期月考数学试题(理)(已下线)8.6.3平面与平面垂直(第1课时平面与平面垂直的判定定理)(精讲)(2)-【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)
名校
解题方法
4 . 在四棱锥
中,底面
为直角梯形,
,E为
的中点,点P在平面
内的投影F恰好在直线
上.
![](https://img.xkw.com/dksih/QBM/2022/5/8/2975169770020864/2975787149991936/STEM/06e16c95-d363-4dab-9ed9-8a068904d0f2.png?resizew=179)
(1)证明:
.
(2)求点B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/2cefd90d94e2b2c3d8c3fc8b169466a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2022/5/8/2975169770020864/2975787149991936/STEM/06e16c95-d363-4dab-9ed9-8a068904d0f2.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0910601e7d760188d10beee6a48f2ac.png)
(2)求点B到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2022-05-09更新
|
811次组卷
|
8卷引用:新疆博乐市高级中学2021-2022学年高三下学期文科数学试题
名校
解题方法
5 . 四棱锥
中,底面
为矩形,
底面
,
,E,F分别为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898521619292160/2945780935729152/STEM/0390475f-76d9-4673-9f31-06a9bd4895dd.png?resizew=178)
(1)求证:
平面
;
(2)设
,求三棱锥
的体积.
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b917803e66b0e3f79e56ad282b2d0613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433330447c4947540b3dc52719659681.png)
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898521619292160/2945780935729152/STEM/0390475f-76d9-4673-9f31-06a9bd4895dd.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0427196f2686a3e6b4a651dafab1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
您最近一年使用:0次
名校
解题方法
6 . 已知四边形ABCD为直角梯形,
,
,
为等腰直角三角形,平面
平面ABCD,E为PA的中点,
,
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
平面PDC;
(2)求证:
平面PBD.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5827a006e69fc21a86abe63f86b7e2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36a60e9b0fe8fe15d7b5ff8a1602e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
您最近一年使用:0次
2022-03-28更新
|
526次组卷
|
2卷引用:新疆石河子第二中学2021-2022学年高二上学期第二次月考数学试题
7 . 已知三棱锥D-ABC,△ABC与△ABD都是等边三角形,AB=2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/436adf57-234a-4e1b-a7ff-b7bb68f5ccb6.png?resizew=145)
(1)若
,求证:平面ABC⊥平面ABD;
(2)若AD⊥BC,求三棱锥D-ABC的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/436adf57-234a-4e1b-a7ff-b7bb68f5ccb6.png?resizew=145)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18834f4ba51bf4d490f35ed02379fec7.png)
(2)若AD⊥BC,求三棱锥D-ABC的体积.
您最近一年使用:0次
2022-03-11更新
|
1217次组卷
|
6卷引用:新疆塔城市第三中学2022-2023学年高二上学期期中数学试题
新疆塔城市第三中学2022-2023学年高二上学期期中数学试题贵州省贵阳市2022届高三适应性监测考试(一)数学(文)试题高考广西桂林、崇左市2022届高三5月联合模拟考试数学(文)试题(已下线)第8.6讲 空间直线、平面的垂直-2021-2022学年高一数学链接教材精准变式练(人教A版2019必修第二册)广东省揭阳市惠来县第一中学2021-2022学年高一下学期第二次阶段考数学试题陕西省部分学校2024届高三下学期高考仿真模拟(一)文科数学试题(全国卷)
名校
解题方法
8 . 如图,在四棱锥
中,
是以
为斜边的等腰直角三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/6d72db14-ba2b-417a-893b-1012c3fd2d8a.png?resizew=175)
(1)证明:平面
平面
;
(2)若四棱锥
的体积为4,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c39e802748fcb416af579e935c567f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e15ac85882124bada16b8886b98481.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/6d72db14-ba2b-417a-893b-1012c3fd2d8a.png?resizew=175)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
您最近一年使用:0次
2022-12-20更新
|
179次组卷
|
2卷引用:新疆昌吉州行知学校2023届高三上学期期末考试数学(理)试题
名校
解题方法
9 . 如图,在正方形ABCD中,E,F分别为BC,CD的中点,H为EF的中点,沿AE,EF,FA将正方形折起,使B,C,D重合于点O,构成四面体,则在四面体
中,下列说法不正确的序号是______________ .①
平面EOF;②
⊥平面EOF;③
;④
;⑤平面
平面AOF.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e76557eb459ed6fec296b1f9889b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c602c1b4fe562e611247f7f0bd5eee7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb03640160bafb4aca92bae25827b272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a843b49a121d3f035af5a48196b0ebc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/16/0f449424-8cbc-4afb-9b43-4e6b84c46f63.png?resizew=155)
您最近一年使用:0次
2023-08-11更新
|
383次组卷
|
8卷引用:新疆阿克苏市第三高级中学2023-2024学年高二上学期第一次月考数学试题
名校
10 . 如图在四面体
中,
是
的中点,
是
的中点,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/14a42585-9ef3-42b8-a414-086597673535.png?resizew=128)
(1)求证:
平面
;
(2)若
,
平面
,且
,求证:
①面
平面
;
②求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276e3c9755dbd39fb01de614840d230f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/14a42585-9ef3-42b8-a414-086597673535.png?resizew=128)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1a378a3a4660eb1ece52085a9b44d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d342cbee09a0cbf04ab7bdccd718b15e.png)
①面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9d78d523614109d391aaa899261806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
②求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次