名校
1 . 在三棱锥
中,PA,PB,PC互相垂直,
,M是线段BC上一动点,且直线AM与平面PBC所成角的正切值的最大值是
,则三棱锥
外接球的体积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7005932de8ace6e3c78a754c35466d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2022-07-05更新
|
432次组卷
|
5卷引用:江西省南昌市新建区第二中学2024届高三7月份学业水平检测数学试题
名校
2 . 在三棱锥
中,平面
平面
,
,
,则该三棱锥外接球的表面积是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c72d84886fada881f230cdce6f6b268.png)
您最近一年使用:0次
2022-06-10更新
|
1737次组卷
|
8卷引用:河南省许平汝联盟2022届高三下学期核心模拟卷(六)文科数学试题
河南省许平汝联盟2022届高三下学期核心模拟卷(六)文科数学试题重庆市实验中学校2021-2022学年高一下学期期末复习(四)数学试题(已下线)专题37:外接球与内切球 -2023届高考数学一轮复习精讲精练(新高考专用)(已下线)7.5 外接球(精练)(已下线)7.7 空间几何的外接球(精练)广西浦北县第二中学2021-2022学年高一下学期期末模拟考试数学试题1(已下线)第32讲直线与平面垂直2(已下线)拓展一:空间几何体的外接球与内切球问题(精讲)-【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
3 . 如图,在边长为4的正三角形
,E为边
的中点,过E作
于D.把
沿
翻折至
的位置,连接
.翻折过程中,其中正确的结论是_________
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992510310645760/2995561851707392/STEM/72e83c4d579e49d3bde1120b8baa0812.png?resizew=163)
①
;
②存在某个位置,使
;
③若
,则
的长是定值;
④若
,则四面体
的体积最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b84c9d873289f99d8eb733d12899280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992510310645760/2995561851707392/STEM/72e83c4d579e49d3bde1120b8baa0812.png?resizew=163)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2181c78134c310f746eab44b9124e63b.png)
②存在某个位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e241c5ef3753b64cea32138964e06f1.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9ad1e2a3b07cfaa8bf1bda84871a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9ad1e2a3b07cfaa8bf1bda84871a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8e86809187e2c5d6e269d951d5f190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595f862f1b3dfc3e8ec0331c8cc9ed6.png)
您最近一年使用:0次
名校
解题方法
4 . 在棱长为1的正方体
中,点P是对角线
的动点(点P与
不重合),则下列结论正确的有___________ .
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992495409119232/2992871258914816/STEM/11800a30-f7a1-4901-bc76-ac6ee41a22fb.png?resizew=190)
①存在点P,使得平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
平面
;
②存在点P,使得
平面
;
③
分别是
在平面
,平面
上的正投影图形的面积,对任意的点P都有
;
④对任意的点P,
的面积都不等于
.
![](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/b04d6165b18f1a031b2a137961832491.png)
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992495409119232/2992871258914816/STEM/11800a30-f7a1-4901-bc76-ac6ee41a22fb.png?resizew=190)
①存在点P,使得平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
②存在点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd5683dba7d9f29d643e9a3e3204fa8.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/f3928d0c519a9e198a0313c75147f6ca.png)
④对任意的点P,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd5683dba7d9f29d643e9a3e3204fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
您最近一年使用:0次
2022-06-02更新
|
874次组卷
|
5卷引用:北京市第十二中学2022届高三第三次模拟练习数学试题
名校
5 . 已知正方体
的棱长为1,E,F,G分别是
,
,
的中点.下列命题正确的是___________ (写出所有正确命题的编号).
①以正方形的顶点为顶点的三棱锥的四个面最多只有三个面是直角三角形;
②P在直线
上运动时,
;
③Q在直线
上运动时,三棱锥
的体积不变;
④M是正方体的面
内到点D和
距离相等的点,则M点的轨迹是一条线段.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/56f7ba05c54b3de1f4378f7c8eb58328.png)
①以正方形的顶点为顶点的三棱锥的四个面最多只有三个面是直角三角形;
②P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e32cf73c01995c91c3523fa11b3bd7d.png)
③Q在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8b73e5f21858fd4caabf9c086d0bbb.png)
④M是正方体的面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
您最近一年使用:0次
解题方法
6 . 已知正方体
的棱长为2,
为
的中点,
为棱
上的动点,点
在线段
上运动,下面说法正确的是_____________ .
①直线
平面
;
②异面直线
与
所成的角范围为
;
③点
到平面
的距离为定值
;
④
的最小值为
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4645450a006f2c20087486d0833afbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
②异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb5de73caf22a6260dc3f8fe87a3908.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6b0fda911dadc8e9a9fed9c14d6d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
您最近一年使用:0次
名校
7 . 已知正方体
的棱长为1,空间一动点
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699dffcb02a445f700c3266c9509d8dc.png)
______ ,点
的轨迹围成的封闭图形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ca3b985453e36bccf3801490e483aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e3016df80fb4d5edca349f3b00e566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699dffcb02a445f700c3266c9509d8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2022-05-26更新
|
1369次组卷
|
5卷引用:山东省潍坊市2022届高三下学期三模统考(5月)数学试题
山东省潍坊市2022届高三下学期三模统考(5月)数学试题江西省景德镇一中2021-2022学年高一(19班)下学期期末考数学试题(已下线)专题22 立体几何中的轨迹问题-2(已下线)第04讲 空间直线、平面的垂直 (练)(已下线)微专题13 轻松搞定立体几何的轨迹问题
8 . 如图,在长方体
中,
,
是棱
上的两个动点,点
在点
的左边,且满足
,给出下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/5706b07d-6e15-4f16-ad02-3fdb195139d6.png?resizew=177)
①
平面
;
②三棱锥
的体积为定值;
③
平面
;
④平面
平面
.
其中所有正确结论的序号是______ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/366e62778cd38f62e722b73d8cb9a542.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/5706b07d-6e15-4f16-ad02-3fdb195139d6.png?resizew=177)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117e9353aec012c49b7517c563bee36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283fd0db375ddaba4f5e7716875de6f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11076c47d57f44da04d8758d2ed3d8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f67c2d29909f744a60448e409f0fbab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-05-20更新
|
534次组卷
|
3卷引用:陕西省部分地市学校2022届高三下学期高考全真模拟考试理科数学试题
陕西省部分地市学校2022届高三下学期高考全真模拟考试理科数学试题2022届甘肃省武威第六中学高三下学期第八次诊断考试数学(文)试题(已下线)专题14 立体几何(文科)-备战2023年高考数学母题题源解密(全国通用)
名校
解题方法
9 . 在棱长为3的正方体
中,P为
内一点,若
的面积为
,则AP的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1335dec9b6a1dcc7b18f7b3989c4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e65058909566b3945b0c8e48ca4966a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
您最近一年使用:0次
2022-05-18更新
|
488次组卷
|
4卷引用:青海省西宁市大通回族土族自治县2022届高三二模数学(文科)试题
2022·全国·模拟预测
解题方法
10 . 如图,正方体
的棱长为1,动点P在对角线
上,过点P作垂直于
的平面
,记平面
截正方体表面所得截面多边形的面积为y,令
,
,当
时,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
______ ,函数
的值域为______ .
![](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/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8711eddf26d11fc974dfb6da4b640918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae42d527beeb192811cb46e52c4f33b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280878aa2e6d5580178cc6c99229b9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981295680299008/2981992212627456/STEM/d71008d7-00a9-4c4f-b427-758952290329.png?resizew=156)
您最近一年使用:0次