名校
解题方法
1 . 在棱长为2的正方体
中,点M是对角线
上的点(点M与A、
不重合),则下列结论正确的个数为( )
平面
;
②存在点M,使得
平面
;
③若
的面积为S,则
;
④若
、
分别是
在平面
与平面
的正投影的面积,则存在点M,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba49eb8ddd4dd38c1f994ccec93430e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
②存在点M,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce447afe4b0bb57a844b2c103b55fc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42910d271417cc2435d0affa6c85afd5.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce447afe4b0bb57a844b2c103b55fc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31dd78e9156dcf6db93f6cbcc5b43b14.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2020-04-09更新
|
1358次组卷
|
9卷引用:江西省南昌市南昌外国语学校2019-2020学年高二下学期立体几何月考数学试题
(已下线)江西省南昌市南昌外国语学校2019-2020学年高二下学期立体几何月考数学试题湖北省宜昌市2019-2020学年高三期末数学(理)试题2020届高三2月第02期(考点07)(理科)-《新题速递·数学》河北省衡水中学2019-2020学年高三下学期七调数学(理)试题安徽省宿州市十三所重点中学2020-2021学年高一下学期期末数学试题江苏省南通市2020-2021学年高一下学期5月期末模拟测试数学试题安徽省滁州市定远育才学校2021-2022学年高三上学期开学摸底考试理科数学试题天津市新四区示范校2022-2023学年高一下学期期末联考数学试题(已下线)专题04 空间中的平行、垂直关系-期末真题分类汇编(天津专用)
解题方法
2 . 如图,网格纸上小正方形的边长为
,粗线画出的是某多面体的三视图,则该几何体的各个面的面积最大值为( )
![](https://img.xkw.com/dksih/QBM/2020/4/2/2432886041886720/2436506281033728/STEM/4080b609db6f4ba4a3ec620813d5fc97.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://img.xkw.com/dksih/QBM/2020/4/2/2432886041886720/2436506281033728/STEM/4080b609db6f4ba4a3ec620813d5fc97.png?resizew=183)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-04-07更新
|
956次组卷
|
5卷引用:江西省七校2020-2021学年高二(常规班)上学期第三次联考数学(文)试题
江西省七校2020-2021学年高二(常规班)上学期第三次联考数学(文)试题2020届全国十大名校三月大联考名师密卷数学(文)试题(已下线)2020年高考全国3数学文高考真题变式题6-10题(已下线)2020年高考全国3数学理高考真题变式题6-10题新疆喀什地区岳普湖县2022届高三第一次模拟考试数学(理)试题
解题方法
3 . 已知三棱锥
的外接球O半径为2,球心O到
所在平面的距离为1,则三棱锥
体积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
解题方法
4 . 在四面体
中,
,
,
,二面角
的大小为
,则四面体
外接球的表面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c6b0a6cb307c4c02f503831862f7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bbe4cdd2c154bd9a8073b0d4cecb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
名校
5 . 已知四棱锥
的底面
是边长为2的正方形,侧面
底面
,且
,则该四棱锥
的外接球的表面积为______ .
![](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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7005932de8ace6e3c78a754c35466d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2020-01-28更新
|
673次组卷
|
4卷引用:江西省抚州市2019-2020学年高二上学期期末数学(理)试题
解题方法
6 . 已知球
是三棱锥
的外接球,
,
,
,点
是
的中点,且
,则球
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185169a6b4752fdf0e5acbec6f1d4447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d03be8fb54bdd980e646b282889be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5a1ce4f420c84d3b39840b99df9be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-04-28更新
|
421次组卷
|
2卷引用:江西省七校2020-2021学年高二(常规班)上学期第三次联考数学(文)试题
解题方法
7 . 已知正方体
的棱长为
,点
分别为棱
的中点,下列结论中,其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2020/3/18/2422133625020416/2422937541246976/STEM/f308309661f44757959ca132692726ce.png?resizew=175)
①过
三点作正方体的截面,所得截面为正六边形;
②
/平面
;
③
;
④异面直线
与
所成角的正切值为
;
⑤四面体
的体积等于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aec67c4c83e4955f36ec34afb19df83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029ed096f249bfec4420d746e9a3d292.png)
![](https://img.xkw.com/dksih/QBM/2020/3/18/2422133625020416/2422937541246976/STEM/f308309661f44757959ca132692726ce.png?resizew=175)
①过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efd3ad8ddccdc251c85533353d2633f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c769b97e5ec2b6e6bac800c64f77cec.png)
④异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
⑤四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ac02c2f91cadb1e328bc6ab9b9c491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aec67c4c83e4955f36ec34afb19df83.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
解题方法
8 . 已知三棱锥
的外接球的球心
在
上,若三棱锥
的体积为
,
,
,则球
的表面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2909bbd54f8a3baaf315676a18f7dbc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd7526f5ef99a56938ddc15c5f7c3ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
2020-03-20更新
|
550次组卷
|
2卷引用:江西省抚州市临川第一中学2019-2020学年高二下学期第一次月考数学(文)试题
2013·河南郑州·二模
名校
解题方法
9 . 如图所示,矩形
中,
,
.
、
分别在线段
和
上,
,将矩形
沿
折起.记折起后的矩形为
,且平面
平面
.
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930444488204288/2942479592046592/STEM/ddbc4f72edd84c42b944b459b2845f4e.png?resizew=400)
(1)求证:
平面
;
(2)若
,求证:
;
(3)求四面体
体积的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91baecb97fadd4f8ab49e6effcbc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37cfd0530c5623a89ec6a6652a367e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4883c0323525b8464b7b6ad2d421e907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb0bd784f9ca4d5a099b5e55c9a0374.png)
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930444488204288/2942479592046592/STEM/ddbc4f72edd84c42b944b459b2845f4e.png?resizew=400)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d11e0a64470aac58556c3c99c18be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13576338960eb920b0d69e91479d07dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c5c9cc1ed4bce98b7fae77e70b227f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5bdeff879f62f66b12fbd4cb16e3b4a.png)
(3)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53190fae986b40acaa74a089e4214ba.png)
您最近一年使用:0次
2022-03-23更新
|
3624次组卷
|
21卷引用:【校级联考】江西省南昌市八一中学、洪都中学、麻丘高中等七校2018-2019学年高二下学期期中考试数学(理)试题
【校级联考】江西省南昌市八一中学、洪都中学、麻丘高中等七校2018-2019学年高二下学期期中考试数学(理)试题安徽省淮北一中、合肥六中、阜阳一中、滁州中学2018-2019学年高二上学期期末考试数学(文)试题安徽省芜湖市华星学校2022-2023学年高二上学期入学考试数学试题(已下线)2013届河南省中原名校高三下学期第二次联考文科数学试卷山东师范大学附属中学2017-2018学年高一期末考试数学试题(已下线)专题39 空间几何体综合练习-2021年高考一轮数学单元复习一遍过(新高考地区专用)(已下线)专题39 空间几何体综合练习-2021年高考一轮数学(文)单元复习一遍过西藏自治区拉萨中学2020-2021学年高一下学期期末考试数学试题(已下线)专题8.3 立体几何初步 章末检测3(难)-【满分计划】2021-2022学年高一数学阶段性复习测试卷(人教A版2019必修第二册)(已下线)第八章 立体几何初步(基础训练)A卷-2021-2022学年高一数学课后培优练(人教A版2019必修第二册)山西省太原师范学院附属中学、太原市师苑中学校2021-2022学年高一下学期第四次联考数学试题广西河池市2021-2022学年高一下学期八校第二次联考数学试题(已下线)期末押题预测卷01-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)广东省茂名市电白区2021-2022学年高一下学期期末数学试题苏教版(2019) 必修第二册 一课一练 第13章 立体几何初步 单元检测人教B版(2019) 必修第四册 逆袭之路 第十一章 立体几何初步 11.4.1 直线与平面垂直湖南省长沙市浏阳市2022-2023学年高一下学期期末数学试题贵州省黔西南州金成实验学校2022-2023学年高一下学期5月月考数学试题四川省绵阳市三台中学校2021-2022学年高一下学期第四学月月考测试数学试题(已下线)模块四 专题4 暑期结束综合检测4(能力卷)(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点3 面积、体积的范围与最值问题(一)【基础版】
名校
解题方法
10 . 如图,一张矩形白纸
,
,
,
,
分别为
,
的中点,现分别将
,
沿
,DF折起,且
、
在平面
同侧,下列命题正确的是_________ (写出所有正确命题的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d8afe381-c2a2-4e0e-9323-92b674b96b12.png?resizew=169)
①平面
平面
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66418ef39d3081d89411a4907d8599f9.png)
②当平面
平面
时,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
③当
、
重合于点
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb260f1b719839111f61cd9272c33bfd.png)
④当
、
重合于点
时,三棱锥
的外接球的半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a532a0b5312e19c4c4c01067439d6b9d.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8414369aceaa4231d66c698380926b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d8afe381-c2a2-4e0e-9323-92b674b96b12.png?resizew=169)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61eeb1ff8cae12578b05f49eb00a66b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66418ef39d3081d89411a4907d8599f9.png)
②当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61eeb1ff8cae12578b05f49eb00a66b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb260f1b719839111f61cd9272c33bfd.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298de0de8b61450efabaddbf90a845bb.png)
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