解题方法
1 . 在正方体
中,
,
为线段
上的动点,且与
不重合,
为线段
的中点.给出下列三个结论:
;
②三棱锥
的体积不变;
③平面
截正方体
所得的截面图形一定是矩形.
其中,所有正确结论的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a39945178df29b465fc4edc78b9b34.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e73e175c5155281143312d97969009c.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6668c79fb70d1fef682cdf629a851ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
其中,所有正确结论的序号为
您最近一年使用:0次
2 . 如图,在正方体
中,
,则四棱锥
的表面积为___________ ;若该正方体的顶点都在球O的球面上,则球O的体积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdf831e53dd9c7227bce030bdcd84b9.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在边长为1的正方体
中,
是棱
上的一个动点,给出下列四个结论:
的体积为定值;
②存在点
,使得
平面
;
③对每一个点
,在棱
上总存在一点
,使得
平面
;
④
是线段
上的一个动点,过点
的截面
垂直于
,则截面
的面积的最小值为
.
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/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bcd4d16a1f2e89bb43fd1731a05ab1.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565133e91e3ace2b2187cfc6f1db5be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
③对每一个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011abe509df00fe9410ab08b585ad7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-07-07更新
|
991次组卷
|
6卷引用:北京市海淀区2021-2022学年高一下学期期末练习数学试题
北京市海淀区2021-2022学年高一下学期期末练习数学试题北京市昌平区第二中学2023届高三上学期期中考试数学试题(已下线)微专题11 立体几何中的截面问题(2)(已下线)模块五 专题3 全真拔高模拟(人教B)北京市中关村中学2023-2024学年高二上学期期中练习数学试题(已下线)专题06 空间中点线面的位置关系6种常考题型归类(2) -期期末真题分类汇编(北京专用)
4 . 用一个平面截一个球,所得截面面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95345846d2dd4dfa042a9093c62a8b82.png)
,球心到截面的距离为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
,则该球的表面积为_______
,体积为_______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95345846d2dd4dfa042a9093c62a8b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6d1d99afa158b4ba4fc0dae562fcc1.png)
您最近一年使用:0次
5 . 已知四棱锥
的高为
和
均是边长为
的等边三角形,给出下列四个结论:
①四棱锥
不可能为正四棱锥;
②空间中一定存在到
距离都相等的点;
③可能有平面
平面
;
④四棱锥
的体积的取值范围是
.
其中所有正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f870afe11170cf0d0982ccc9c6b57b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
①四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
②空间中一定存在到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8301ac7811b90cbe02ae9d97dbd8236c.png)
③可能有平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
④四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a5c583f3fb9791c72431295aefd02a.png)
其中所有正确结论的序号是
您最近一年使用:0次
名校
解题方法
6 . 球面三角学是球面几何学的一部分,主要研究球面多边形(特别是三角形)的角、边、面积等问题,其在航海、航空、卫星定位等方面都有广泛的应用.定义:球的直径的两个端点称为球的一对对径点;过球心的平面与球面的交线称为该球的大圆;对于球面上不在同一个大圆上的点
,
,
,过任意两点的大圆上的劣弧
,
,
所组成的图形称为球面
,记其面积为
.易知:球的任意两个大圆均可交于一对对径点,如图1的
和
;若球面上
,
,
的对径点分别为
,
,
,则球面
与球面
全等.如图2,已知球
的半径为
,圆弧
和
所在平面交成的锐二面角
的大小为
,圆弧
和
所在平面、圆弧
和
所在平面交成的锐二面角的大小分别为
,
.记
.
![](https://img.xkw.com/dksih/QBM/2022/6/18/3003864495038464/3005607105249280/STEM/19bb80d1a89a48fe99515b4e88cb5894.png?resizew=426)
(1)用
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e0d68d07743567ceddce8be857d082.png)
__________ .
(2)用
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3a342fb5b1a475ed060e482b5df011.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3761d19de9331c86f313fb92cea27d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d013031cae9acab04f40369d49437e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19c1bcb8431ae315ecd29c6478d3eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e712e6bcf935c4b58fcbd75fc7a38622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3761d19de9331c86f313fb92cea27d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f95817a8ecb0cdea4e20bfd9911ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c466e74381062eef21a0145277e5e45.png)
![](https://img.xkw.com/dksih/QBM/2022/6/18/3003864495038464/3005607105249280/STEM/19bb80d1a89a48fe99515b4e88cb5894.png?resizew=426)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325a5be295a97a211449b629ddb563d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e0d68d07743567ceddce8be857d082.png)
(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0238cd62a4b1b8f3bbad83953bb60d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3a342fb5b1a475ed060e482b5df011.png)
您最近一年使用:0次
名校
解题方法
7 . 已知一个正三棱锥的底面边长为2,高为
,则该正三棱锥的全面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
您最近一年使用:0次
8 . 《双行星》(图1)是荷兰著名版画家埃舍尔1949年的木刻作品,该作品清晰展示了其试图结合不同世界的设想,基本结构是两个相同的正四面体相互交叉,为了便于观看,埃舍尔用黄白双色进行区分.可以看到,拥有高度文明的黄色的星球正在上演着人类的戏剧,规则的建筑和寸草不生的地表,处在史前时代的白色的星球,怪石嶙峋,恐龙和原始植物相依.通过这种对比埃舍尔似乎提出了一个警告,高度文明或许会消除了一切自然的痕迹.——《在埃舍尔的时空旅行》将《双行星》抽象为图2的组合体,若两个正四面体棱长均为2,且相交处均为棱中点,求这个组合体体积___________ .两个正四面体相交,公共部分形成的几何体表面积是___________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/1fa9fd3f-7ee2-4f83-9688-d72179b7e4b5.png?resizew=337)
您最近一年使用:0次
名校
解题方法
9 . 如图所示,记几何体W是棱长为1的正方体
割去两个三棱锥
,
后剩余的几何体.给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/93f65bb9-168b-4a27-bd42-dcaf02a0d278.png?resizew=190)
①几何体W的体积为
;
②几何体W的表面积为
;
③几何体W的顶点均在某个球面上,则该球的半径为
;
④若几何体W被与平面
平行的平面
所截的截面多边形的每条边长都相等,则平面
与平面
的距离为
.
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/6189a4d33d37927684c7a68f32794373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441c7b2e7622f16515e31bd6a1260b07.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/93f65bb9-168b-4a27-bd42-dcaf02a0d278.png?resizew=190)
①几何体W的体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
②几何体W的表面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab46ea0cba2d06283fae3d864a2329e0.png)
③几何体W的顶点均在某个球面上,则该球的半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
④若几何体W被与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34e01955f8c8fe2f0041b35d8d602a7.png)
其中所有正确结论的序号是
您最近一年使用:0次
解题方法
10 . 已知圆锥的侧面积是底面积的
倍,则该圆锥的侧面展开图扇形的圆心角大小为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
您最近一年使用:0次