名校
解题方法
1 . 在四棱锥
中,
底面
,
,
,
,点
在棱
上,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/0aec0905-cecc-4b92-9538-094e59fa1a13.png?resizew=163)
(1)证明:
平面
;
(2)若
,求点
,
到平面
的距离之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4575a365b8e619654a7327d216f23783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575c840debd9149001fe32fd9d2b5c03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/0aec0905-cecc-4b92-9538-094e59fa1a13.png?resizew=163)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932a04304f2d4975955d4baabb2deeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00a76b40e3e0dd1ffb62160b2b99715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2021-11-29更新
|
3115次组卷
|
5卷引用:内蒙古赤峰市2021-2022学年高三上学期期末考试数学(文)试题
名校
2 . 如图,在直四棱柱
中,底面
是菱形,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/b4062ad5-fb5a-45b6-bbfe-beff89b5d55d.png?resizew=161)
(1)求证:
平面
;
(2)已知
,
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/2023/1/13/b4062ad5-fb5a-45b6-bbfe-beff89b5d55d.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a463a03c549b0dba6d90e7f16a2af.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93283706ac5f5f1c0cd1f19c306caa5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a463a03c549b0dba6d90e7f16a2af.png)
您最近一年使用:0次
2021-11-17更新
|
1454次组卷
|
10卷引用:内蒙古赤峰二中2021-2022学年高二上学期第二次月考数学(理)试题
内蒙古赤峰二中2021-2022学年高二上学期第二次月考数学(理)试题四川省成都市第七中学2021-2022学年高三上学期期中考试理科数学试题辽宁省沈阳市第二中学2021-2022学年高三上学期第二次阶段测试数学试题(已下线)专题1.4 模拟卷(4)-2022年高考数学大数据精选模拟卷(新高考地区专用)海南省琼海市嘉积中学2022届高三下学期第一次月考数学试题四川省成都市第七中学2022-2023学年高三上学期期中考试理科数学试题福建省福州市鼓山中学2023届高三上学期11月月考数学试题山东省济宁市第一中学2024届高三上学期12月月考数学试题山东省临沂市沂水四中2024届高三上学期12月月考数学试题河南省郑州市宇华实验学校2023-2024学年高二上学期1月月考数学试题
20-21高一·全国·课后作业
解题方法
3 . 如图,E,F,G,H分别是空间四边形ABCD的边AB,BC,CD,DA的中点,求证:
(2)
平面
,
平面
.
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
您最近一年使用:0次
2021-11-13更新
|
565次组卷
|
4卷引用:内蒙古巴彦淖尔市临河区第三中学2021-2022学年高二(计算机班)上学期期末数学试题
内蒙古巴彦淖尔市临河区第三中学2021-2022学年高二(计算机班)上学期期末数学试题(已下线)13.2.3 直线与平面的位置关系(已下线)8.5 空间直线、平面的平行-2021-2022学年高一数学10分钟课前预习练(人教A版2019必修第二册)苏教版(2019)必修第二册课本习题 习题13.2(3)
4 . 已知
,
为两个平面,
为直线,若
,
,则下面结论正确的是( )
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
A.垂直于平面![]() ![]() |
B.垂直于直线![]() ![]() ![]() |
C.垂直于平面![]() ![]() |
D.垂直于直线![]() ![]() |
您最近一年使用:0次
名校
解题方法
5 . 如图,在正方体
中,
为
的中点,
.求证:
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726625096425472/2831394144395264/STEM/e3307d9c-8227-48e2-a8bb-3a56d5f44c13.png?resizew=226)
(1)
平面
;
(2)
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726625096425472/2831394144395264/STEM/e3307d9c-8227-48e2-a8bb-3a56d5f44c13.png?resizew=226)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96946eaa2878fb8433eb2a97797a32b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
您最近一年使用:0次
2021-10-17更新
|
1605次组卷
|
10卷引用:内蒙古自治区阿拉善盟第一中学2021-2022学年高二上学期期中考试数学(文)试题
内蒙古自治区阿拉善盟第一中学2021-2022学年高二上学期期中考试数学(文)试题陕西省渭南市韩城市2020-2021学年高一上学期期末数学试题陕西省西安市阎良区2020-2021学年高一上学期期末数学试题(已下线)8.5 空间直线、平面的垂直--2020--2021高中数学新教材配套提升训练(人教A版必修第二册)(已下线)8.6空间直线、平面的垂直(1)(精炼)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)广西崇左高级中学2020-2021学年高一下学期开学考试数学(理)试题(已下线)专题13.2 本图形位置关系(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)(已下线)8.6 空间直线、平面的垂直(精讲)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)湖北省武汉市常青联合体2021-2022学年高一下学期期末数学试题山东省潍坊市昌邑市潍坊实验中学2022-2023学年高二上学期9月月考数学试题
名校
解题方法
6 . 如图,正三棱柱
的底面边长是2,侧棱长是
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/7a92e283-f5a1-4150-b365-d4c09c57ece8.png?resizew=205)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/7a92e283-f5a1-4150-b365-d4c09c57ece8.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504a36c231b8e80724d01649e7c0944f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6e83a7ba71f5692083bc3a1bbc407c.png)
您最近一年使用:0次
2021-09-16更新
|
318次组卷
|
3卷引用:内蒙古自治区阿拉善盟阿拉善盟第一中学2021-2022学年高二上学期第一次段数学试题
7 . 如图,已知圆锥的轴截面
为等腰直角三角形,底面圆
的直径为
,
是圆
上异于
,
的一点,
为弦
的中点,
为线段
上异于
,
的点,以下正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/2e2e91ef-778e-4158-82ce-54fa4a303d6f.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/2e2e91ef-778e-4158-82ce-54fa4a303d6f.png?resizew=160)
A.直线![]() ![]() |
B.![]() ![]() |
C.直线![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2021-09-08更新
|
786次组卷
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4卷引用:内蒙古海拉尔第二中学2021-2022学年高三上学期第三次阶段考数学(理)试题
内蒙古海拉尔第二中学2021-2022学年高三上学期第三次阶段考数学(理)试题江苏省百校联考2021-2022学年高三上学期第一次考试数学试题(已下线)考点32 异面直线所成的角-备战2022年高考数学典型试题解读与变式江苏省如东中学、姜堰中学、沭阳中学三校2022届高三下学期4月阶段性测试数学试题
名校
解题方法
8 . 如图所示,在四棱锥
中,底面
为正方形,
为侧棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f6de2eae-ecc3-4f8e-93fd-6417f1bf9813.png?resizew=156)
(1)设经过
、
、
三点的平面交
于
,证明:
为
的中点;
(2)若
底面
,且
,求四面体
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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f6de2eae-ecc3-4f8e-93fd-6417f1bf9813.png?resizew=156)
(1)设经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)若
![](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/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ebbb644b9bdd7be6e7ea5722924863c.png)
您最近一年使用:0次
2021-08-09更新
|
1218次组卷
|
4卷引用:内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)文科数学试题
名校
9 . 在四棱锥
中,平面
平面
,底面
为直角梯形,
,
,
,
为线段
的中点,过
的平面与线段
,
分别交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/69470f49-f4ee-443b-81f6-da696d8dbeb0.png?resizew=203)
(1)求证:
;
(2)若
,线段
上是否存在点
,使得直线
与平面
所成角的正弦值为
,若存在,请确定
点的位置;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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acb763021bf166ca719d07223591d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a1721a436858a999093da04bc17bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639bec6242a4b3f7bfb4b7033a67328c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/69470f49-f4ee-443b-81f6-da696d8dbeb0.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1669c75e80a86a3ab27b660322fed353.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1328e05d150f86dbe18656662eaa8f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
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11卷引用:内蒙古自治区赤峰市赤峰第四中学2023-2024学年高二上学期10月月考数学试题
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20-21高三下·全国·阶段练习
名校
解题方法
10 . 如图,在四棱锥
中,
平面
底面
是菱形,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6dc927d2-a0bb-4197-8dc6-7f46d4ad4f6e.png?resizew=190)
(1)证明:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c707f0202ec1aa233e1eeacc7a4587d.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/c788746155b46628c21709a55a9f86dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6dc927d2-a0bb-4197-8dc6-7f46d4ad4f6e.png?resizew=190)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36b782955ed364569d63c96e09b2430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8964550c7fc31d982b1534e884ad6f52.png)
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