解题方法
1 . 如图,
为
的直径,
垂直于
所在的平面,
为
上任意一点.
(1)求证:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/f2833cbd-b84b-4179-89ce-2a22af5a4f39.png?resizew=136)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7767d492158189b23af332a8016ed37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3bc903102a41b544c51fedb7467773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790c0a17ee2d7181ee95da741694bd1a.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥
中,底面ABCD是矩形,PA为点P到平面ABCD的距离,
,
,
,点E、M分别在线段AB、PC上,其中E是AB中点,
,连接ME.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/9797c1d8-614a-4a3a-90f7-8d3a61694489.png?resizew=173)
(1)当
时,证明:直线
平面PAD;
(2)当
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63990b747412ceb354c03b9a13234ede.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/9797c1d8-614a-4a3a-90f7-8d3a61694489.png?resizew=173)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3f597453e9c3cd6b365ae2b055fd27.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30dd61c707254ea77f8896a61ab5623e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71719fa9855745e17362dc00fe945ce2.png)
您最近一年使用:0次
2023-05-11更新
|
2451次组卷
|
7卷引用:陕西省咸阳市武功县2022-2023学年高一下学期期中数学试题
陕西省咸阳市武功县2022-2023学年高一下学期期中数学试题(已下线)第13章:立体几何初步 重点题型复习-【题型分类归纳】(已下线)第06讲 立体几何位置关系及距离专题期末高频考点题型秒杀湖北省鄂西南三校2022-2023学年高一下学期5月月考数学试题四川省成都市武侯高级中学2022-2023学年高一下学期6月月考数学试题四川省绵阳市南山中学实验学校2022-2023学年高一下学期5月月考数学试题湖南省名校联盟2023-2024学年高二上学期入学摸底考试数学试题
3 . 《九章算术》中记录的“羡除”是算学和建筑学术语,指的是一个类似隧道形状的几何体.如图,在羡除
中,底面
是边长为2的正方形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/59c58b32-d78e-4c41-b7a3-2ce653c4ccd1.png?resizew=190)
(1)证明:平面
平面
.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d898dee1abd34de0dc585bd94d1181.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/59c58b32-d78e-4c41-b7a3-2ce653c4ccd1.png?resizew=190)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e51817ee1ebf17c73ed21171bcfc5b5.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe75265804012759b4ba6b8302edf78.png)
您最近一年使用:0次
2023-05-09更新
|
897次组卷
|
3卷引用:河南省豫南名校毕业班2023届高三仿真测试三模文科数学试题
名校
解题方法
4 . 如图,四棱锥
中,底面
是边长为
的正方形,
是
的中心,
底面
,
是
的中点.
(1)求证:
平面
;
(2)若
,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/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.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/2023/8/21/888665b4-0c89-485a-99d8-2534ffce9190.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954c584f9c868d235e0fc1debb14428d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07445aa3909818a3ef93bb01182f545f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
您最近一年使用:0次
2023-08-20更新
|
1400次组卷
|
6卷引用:海南省陵水黎族自治县陵水中学2024届高三上学期第一次模拟考试数学试题
5 . 如图,正三棱柱
的高为
,底面边长为2,点
,
分别为
,
上的点.
,
上是否存在点
,
使得平面
平面
?如果存在,在此条件下证明平面
平面
;
(2)在(1)的条件下,求几何体
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/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9cb7169ed96de483723b93ade8266a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9cb7169ed96de483723b93ade8266a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
(2)在(1)的条件下,求几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c4d2eab70f25f919044156604b1597.png)
您最近一年使用:0次
2023-09-16更新
|
629次组卷
|
6卷引用:宁夏大武口区石嘴山市第三中学2022-2023学年高一下学期期中数学试题
宁夏大武口区石嘴山市第三中学2022-2023学年高一下学期期中数学试题(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点2 空间平行关系的判定与证明综合训练【培优版】(已下线)第10讲 8.5.3 平面与平面平行-【帮课堂】(人教A版2019必修第二册)(已下线)8.5.2平面与平面平行(已下线)6.6简单几何体的再认识-【帮课堂】(北师大版2019必修第二册)(已下线)8.5.3 平面与平面平行-同步精品课堂(人教A版2019必修第二册)
解题方法
6 . 如图,
平面
,
,
,
为
中点.
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.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/c7cf6f5dd2b36c20b8b4924cd9537d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6549b39fdfdb0b236016a1def09d391e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62871bb0dff211fc3bd80f9066c25b29.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
您最近一年使用:0次
2023-07-11更新
|
504次组卷
|
3卷引用:山东省泰安市2022-2023学年高一下学期期末数学试题
名校
解题方法
7 . 如图,在棱长为2的正方体
中,点
分别为棱
的中点, 求证:
(1)
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a833b17c2071f6c3add54d8eaefde.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/4bb36650-59f3-4d5e-befa-ecaa0ba0b88d.png?resizew=156)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932a04304f2d4975955d4baabb2deeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee076fe7dbca5616c4e8a6869a355f4.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
您最近一年使用:0次
2023-07-06更新
|
511次组卷
|
2卷引用:重庆市长寿区2022-2023学年高一下学期期末数学试题(B卷)
名校
解题方法
8 . 如图,四棱锥
中,
是四棱锥
的高,底面
为边长为2的菱形且对角线
与
交于点
,
,点
是
的中点.
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fccaf36651e0ac62b3ccf9edd74372a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d245c35c56ded2ceb001c06a5d0ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ea1efba56e577f2a289b4be22bbc73.png)
您最近一年使用:0次
解题方法
9 . 如图1,在直角梯形
中,
,
,
,
,
,
分别为
,
的中点.将直角梯形
沿
,
,
折起,使得
,
,
重合于点
,得到如图2所示的三棱锥
.
(1)证明:
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ef60ed4e4233a949345cb848d8483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1359ea39e0d3584a24b878a079e50a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e173b1a57fc78a1dc2405275611e668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e867e4fe4ee35b9098a39734c9737f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d803886ece8068dd12f174443bf01a0d.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/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee51946da54ce4130fefa5e488589d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ef60ed4e4233a949345cb848d8483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/a659b85c-1eaf-4fbc-bedd-37f4ed9f2264.png?resizew=335)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbad7ad1465d1c4c177e3321e6ed12a.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4c26f3f4d96117f087400a0f32ece8.png)
您最近一年使用:0次
解题方法
10 . 如图,在三棱柱
中,
平面
,且
,点
是棱
的中点.
(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/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd9a2cf5917a7487640ee921762071d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/10/5ae7b0c0-0c74-4694-b889-ecfa3bdb385e.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a98287a302228ece1fa53c5c66c590f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efebbbd5803c8775e30bbb27ad68719e.png)
您最近一年使用:0次