1 . 如图,在四棱锥P-ABCD中,底面ABCD为菱形,其中
,
,点M在线段PC上,且
,N为AD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/e69e7391-c055-408c-83f8-7e2f4396e789.png?resizew=155)
(1)求证:
平面PNB;
(2)若平面
平面ABCD,求三棱锥PNBM的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931bbffda5e872703c9947eccc47ede2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6569c61bfa235b6a13a80cc4dbf4706.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/e69e7391-c055-408c-83f8-7e2f4396e789.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
您最近一年使用:0次
2021-11-12更新
|
1803次组卷
|
12卷引用:广西柳州高级中学2019-2020学年高三4月线上月考数学(文)试题
广西柳州高级中学2019-2020学年高三4月线上月考数学(文)试题(已下线)2020届高三12月第03期(考点07)(文科)-《新题速递·数学》(已下线)考点24 空间几何体体积及表面积(练习)-2021年高考数学复习一轮复习笔记(已下线)专题8.5 直线、平面垂直的判定及性质 (精讲)-2021年高考数学(文)一轮复习学与练甘肃省武威市民勤县第四中学2020-2021学年高三上学期期末考试数学(文)试题新疆克拉玛依市2022届高三第三次模拟检测数学(文)试题陕西师范大学附属中学、渭北中学等2022-2023学年高三上学期期初联考文科数学试题四川省乐山市十校2019-2020学年高二上学期期中数学(文)试题人教A版(2019) 必修第二册 过关斩将 第八章 立体几何初步 本章复习提升湖北省鄂州市部分高中联考协作体2019-2020学年高二上学期期中考试数学试题宁夏银川市长庆高级中学2020-2021学年高一上学期期末考试数学试题北师大版 必修2 过关斩将 第一章 立体几何初步 本章复习提升
解题方法
2 . 如图甲,在四边形ABCD中,
,
,
,
.将
与
沿AE,BF同侧折起,连接CD得到图乙的空间几何体
.
![](https://img.xkw.com/dksih/QBM/2020/12/16/2619050586947584/2654169739976704/STEM/5ddd90a4-b2a9-49eb-8c64-41f28eb1ef58.png?resizew=445)
(1)若
,证明:
;
(2)若
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180868535d96d800625148a03a33e9d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6180cb8ef486172669c7b7724fb27f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bd5bf70253169de1becbeef5a00eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535770901287f244911b42412533d4a9.png)
![](https://img.xkw.com/dksih/QBM/2020/12/16/2619050586947584/2654169739976704/STEM/5ddd90a4-b2a9-49eb-8c64-41f28eb1ef58.png?resizew=445)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5322a78b02c2bc387ea7dce3e9461974.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dced11455b3e31a9090915f80a046fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18120a244d3a1f9c1688bf53eb2ad775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26712d1a7a5864cd18498f16f7bd96c.png)
您最近一年使用:0次
3 . 三棱锥
中,底面
与侧面
均为正三角形,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/14/2636036714627072/2638013535633408/STEM/ee32483f-aac9-49e7-8a4b-d85e8bc22466.png?resizew=238)
(1)证明:平面
平面
;
(2)
为线段
上一点,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/1/14/2636036714627072/2638013535633408/STEM/ee32483f-aac9-49e7-8a4b-d85e8bc22466.png?resizew=238)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13de8cbfb0b865ea5a61e7a4ff1abe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9cee228a9d8c0636277d10f954221d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0cd3667a5d668bce45e7c562a30e287.png)
您最近一年使用:0次
2021-01-17更新
|
183次组卷
|
2卷引用:广西钦州市2021届高三第二次模拟考试数学(文)试题
名校
解题方法
4 . 如图,在四棱锥
中,
,
,
,
是线段
上的点,且
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575271708442624/2578091507089408/STEM/d23fdfe4-b332-4d0f-9d33-be1f90dc182b.png?resizew=264)
(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/60e19cb2532a1cc2c4368c587d2a4bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.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/078cd8aa869ee8e2cfbc8f14f5f4c62c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575271708442624/2578091507089408/STEM/d23fdfe4-b332-4d0f-9d33-be1f90dc182b.png?resizew=264)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50771ffd8cba56bce31ecdca7cdc1e39.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,在四棱锥
中,
平面
,
,
,且
,
.
![](https://img.xkw.com/dksih/QBM/2020/8/13/2527164359933952/2530081765457920/STEM/d3709ca37b954a1d97f5a6f0046b6279.png?resizew=244)
(1)证明:
;
(2)若
,且四棱锥
的体积为
,求
的面积.
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1602c3d3e9628cd503a443024410e87a.png)
![](https://img.xkw.com/dksih/QBM/2020/8/13/2527164359933952/2530081765457920/STEM/d3709ca37b954a1d97f5a6f0046b6279.png?resizew=244)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d64315949d64f0c37115584e8396c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2020-08-18更新
|
129次组卷
|
3卷引用:广西钦州市2019-2020学年高三5月质量检测数学(文)试题
广西钦州市2019-2020学年高三5月质量检测数学(文)试题(已下线)专题19 立体几何综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)新疆生产建设兵团第四师第一中学2019-2020学年高一下学期期末考试数学试题
解题方法
6 . 如图,在四棱锥
中,
平面
,
,
,且
,
.
![](https://img.xkw.com/dksih/QBM/2020/8/13/2526810044841984/2527025946664960/STEM/942a699a75824d0cae0c2dd53a0c7ed3.png?resizew=199)
(1)证明:
.
(2)若
,且四棱锥
的的体积为
,求
的面积.
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.png)
![](https://img.xkw.com/dksih/QBM/2020/8/13/2526810044841984/2527025946664960/STEM/942a699a75824d0cae0c2dd53a0c7ed3.png?resizew=199)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8987ae19d2d5c1955c53f18644556acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2020-08-13更新
|
222次组卷
|
2卷引用:广西玉林市、百色市2020届高三(5月份)高考数学(文科)质检试题(一模)
解题方法
7 . 如图,在四棱柱ABCD﹣A1B1C1D1中,D1D⊥底面ABCD,BD1⊥B1D,四边形ABCD是边长为4的菱形,D1D=6,E,F分别是线段AB的两个三等分点.
![](https://img.xkw.com/dksih/QBM/2020/7/24/2512941507223552/2512990485839872/STEM/9e896d0c-d023-46c9-be59-1c6e63321631.png?resizew=163)
(1)求证:D1F//平面A1DE;
(2)求四棱柱ABCD﹣A1B1C1D1的表面积.
![](https://img.xkw.com/dksih/QBM/2020/7/24/2512941507223552/2512990485839872/STEM/9e896d0c-d023-46c9-be59-1c6e63321631.png?resizew=163)
(1)求证:D1F//平面A1DE;
(2)求四棱柱ABCD﹣A1B1C1D1的表面积.
您最近一年使用:0次
名校
解题方法
8 . 四棱锥P﹣ABCD中,AB∥CD,AB⊥BC,AB=BC=1,PA=CD=2,PA⊥底面ABCD,E在PB上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/bb11194a-b5b7-4aa7-8127-ee8c98a76eeb.png?resizew=167)
(1)证明:AC⊥PD;
(2)若PE=2BE,求三棱锥P﹣ACE的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/bb11194a-b5b7-4aa7-8127-ee8c98a76eeb.png?resizew=167)
(1)证明:AC⊥PD;
(2)若PE=2BE,求三棱锥P﹣ACE的体积.
您最近一年使用:0次
2020-05-30更新
|
1980次组卷
|
6卷引用:广西桂林十八中2020届高三(7月份)高考数学(文科)第十次适应性试题
9 . 如图,在四棱锥
中,四边形
是等腰梯形,
,
,
,三角形
是等边三角形,平面
平面
,
、
分别为
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/1c433b7f-2c7d-4d1b-b037-4708e859c6db.png?resizew=195)
(1)求证:平面
平面
;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae139b51956b9281d73d9ba82b875e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/1c433b7f-2c7d-4d1b-b037-4708e859c6db.png?resizew=195)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b156bc439fbaba3bfc9937beccb9b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ce281401b92d11871867cf5a5fe199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0421a60cf7269fd9869c77c59a84d2a1.png)
您最近一年使用:0次
解题方法
10 . 如图,菱形
的边长为4,
,
为
中点,将
沿
折起使得平面
平面
,
与
相交于点
,
是棱
上的一点且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/5747de02-217e-4d6b-99b7-70ea87cb48e8.png?resizew=409)
(1)求证:
∥平面
;
(2)求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8210bde150614e503abe6cf5945d2e34.png)
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(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5048f9f58dc85ecf61756611c7cd2923.png)
您最近一年使用:0次
2020-05-13更新
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625次组卷
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2卷引用:2020届广西柳州市高三毕业班4月模拟(三模)文科数学试题