解题方法
1 . 如图,在五棱锥
中,平面
平面
,
.
平面
;
(2)若四边形
为矩形,且
,
.当直线
与平面
所成的角最小时,求三棱锥
体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989babd4c8db2422e5d239e03dae94b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e0e3a328e0bb05b3d5bb92f19d37b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7b3a929949efd699494540a768ed76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff94ae7692477febffe53b03f06e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c86f60bd51922a6d2515ebf71c3ee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bded420871e5b9a06dd7d3fe922e5f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4ff4a4e0938d9e1cba4e0341059724.png)
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2 . 已知正方体
的棱长为
为线段
上的动点,则点
到平面
距离的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1edbeb539b3dc6d5e5d322fef9fe0a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9150bd9ff61dd891483fa1d885c7bf.png)
A.1 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2024-01-16更新
|
796次组卷
|
6卷引用:河北省石家庄市第二中学2024届高三上学期第一次模拟测试数学试题
河北省石家庄市第二中学2024届高三上学期第一次模拟测试数学试题河北省石家庄市十八中2024届高三上学期1月联考数学试题河北省2024届高三上学期大数据应用调研联合测评数学试题(已下线)第13讲 8.6.2直线与平面垂直的性质定理 (第2课时)-【帮课堂】(人教A版2019必修第二册)(已下线)第17讲 第八章 立体几何初步 章末重点题型大总结-【帮课堂】(人教A版2019必修第二册)(已下线)核心考点7 立体几何中角和距离 B提升卷 (高一期末考试必考的10大核心考点)
3 . 已知一个圆台的上、下底面面积之比为
,其轴截面面积为9,母线长为上底面圆的半径的
倍,则这个圆台的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9c934d84feba963335cc7edf01610e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-22更新
|
890次组卷
|
3卷引用:河北省正定中学2023届高三模拟预测(二)数学试题
解题方法
4 . 如图,在
中,
,
为
的中点,将
绕
所在的直线逆时针旋转至
形成如图所示的几何体
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/fec9202c-c8fa-48e5-9ef5-3d873f18658e.png?resizew=116)
(1)求几何体
的体积;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ff3fb840481d607d205e9dcd33ebd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4686f39b38d5b90309ee73ed89a0640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a808d5b0143d90d09bccc8141371e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/fec9202c-c8fa-48e5-9ef5-3d873f18658e.png?resizew=116)
(1)求几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
名校
解题方法
5 . 如图①,在等腰梯形
中,点
为边
上的一点,
,
是一个等边三角形,现将
沿着
翻折至
,如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/27/29e38d61-fb2c-49d4-b220-8486f059cf62.png?resizew=272)
(1)在翻折过程中,求四棱锥
体积的最大值;
(2)当四棱锥
体积最大时,求平面
与平面
的夹角的余弦值.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0716fe3ef2d1c42374ecbf836a549873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/27/29e38d61-fb2c-49d4-b220-8486f059cf62.png?resizew=272)
(1)在翻折过程中,求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f713ea2a48a99e828d7ff3d876c8ca.png)
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f713ea2a48a99e828d7ff3d876c8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb8697622fb9d281cf44feb4adaf14a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2023-04-21更新
|
1082次组卷
|
5卷引用:河北省石家庄市部分学校2023届高三联考(二)数学试题
解题方法
6 . 已知正方体
的棱长为2,M,N分别是
,
的中点,则( )
![](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/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() |
B.![]() |
C.平面![]() ![]() |
D.三棱锥![]() |
您最近一年使用:0次
7 . 战国时期的铜镞是一种兵器,其由两部分组成,前段是高为3cm、底面边长为2cm的正三棱锥,后段是高为1cm的圆柱,圆柱底面圆与正三棱锥底面的正三角形内切,则此铜镞的体积为( )
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987806755291136/2990776107237376/STEM/b7685d10-b312-4294-a608-30570ad5f555.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987806755291136/2990776107237376/STEM/b7685d10-b312-4294-a608-30570ad5f555.png?resizew=174)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-05-30更新
|
1796次组卷
|
9卷引用:河北省石家庄市2023届高三新高考考前模拟数学试题
河北省石家庄市2023届高三新高考考前模拟数学试题山东省临沂市2022届高三下学期三模数学试题天津外国语大学附属外国语学校2022-2023学年高三下学期统练22数学试题(已下线)专题21 空间几何体(讲义)-2023年高考数学一轮复习精讲精练宝典(新高考专用)(已下线)第22练 简单几何体的表面积与体积(已下线)2022年高考天津数学高考真题变式题19-20题(已下线)2022年高考天津数学高考真题变式题7-9题天津市实验中学2022-2023学年高三上学期期末数学试题天津市双菱中学2022届高三下学期开学考试数学试题
名校
解题方法
8 . 如图,已知
为圆
的直径,
为圆上一动点,
圆
所在平面,且
,过点
作平面
,交
分别于
,则三棱锥
外接球的表面积为__________ ;当三棱锥
体积最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bdfcf009619b9f8d6072adf07d81c7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e052fa774304de59f3b6cd4b27600a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bdfcf009619b9f8d6072adf07d81c7.png)
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985476811431936/2986820288765952/STEM/7a887b7a-7205-4e8f-b312-caf6f96b32d8.png?resizew=199)
您最近一年使用:0次
名校
解题方法
9 . 在四面体ABCD中,BA,BC,BD两两垂直,
,
,则四面体ABCD内切球的半径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d2fc1ae143960a13e51a726af81b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc223bc59d4c5b1c99f811e4bded9783.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-05-19更新
|
955次组卷
|
4卷引用:河北省石家庄市第二中学2022届高三下学期高考考前模拟数学试题
名校
10 . 如图,平行六面体
的底面
是矩形,P为棱
上一点.且
,F为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/27bbb2b8-53cd-4f1d-9612-ff0d4ae66513.png?resizew=193)
(1)证明:
;
(2)若
.当直线
与平面
所成的角为
,且二面角
的平面角为锐角时.求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/27bbb2b8-53cd-4f1d-9612-ff0d4ae66513.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56375c3423cc022ac9d6d04e3a61bb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1c9d4808c72fb8e4c885e236d62967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1636b4530c0b42d0e0b649e90e3b9e85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3379b0519d41af970b9d28dfba0094d8.png)
您最近一年使用:0次
2022-04-08更新
|
1246次组卷
|
2卷引用:河北省石家庄市2022届高三二模数学试题