正四棱锥
中,底面边长为
,二面角
为
,则该四棱锥的高等于____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
22-23高二上·北京·阶段练习 查看更多[4]
北京市一六一中学2022-2023学年高二上学期10月月考数学试题河南省周口市川汇区周口恒大中学2024届高三上学期期末数学试题(已下线)第14讲 8.6.3平面与平面垂直(第1课时 )-【帮课堂】(人教A版2019必修第二册)(已下线)专题训练:空间线线角、线面角、面面角求解精练30题-同步题型分类归纳讲与练(人教A版2019必修第二册)
更新时间:2022-10-13 08:53:33
|
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】已知正四棱锥的底面边长为
,高为
,则此正四棱锥的表面积为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】已知四棱锥的底面是边长为2的正方形,侧棱长均为
,则四棱锥的体积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】如图,在直角梯形
中,
,
,
,
,
分别是
,
的中点,将三角形
沿
折起.下列说法正确的是______ .(填序号)
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645297622016000/2647838462074880/STEM/8b291362-2aba-470e-8ce7-f41f8f63a9b6.png)
①不论
折至何位置(不在平面
内)都有
平面
;
②不论
折至何位置(不在平面
内)都有
;
③在折起过程中,一定存在某个位置,使
平面
;
④当二面角
的大小为
时,四棱锥
的体积取最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479bb5e937f4fdb1fcbca229e62e0e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c05986ad5fa244bc1aedf7b5d216544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645297622016000/2647838462074880/STEM/8b291362-2aba-470e-8ce7-f41f8f63a9b6.png)
①不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678b28fddb166d90878d24d6e5481080.png)
②不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c4a875c62b36bcc95d629b780d8ed4.png)
③在折起过程中,一定存在某个位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
④当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03a08e6ea74ee085ed9dd4a05af94c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675127116b1cace5e3158a88b7a2044a.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】引江济淮是一项大型跨流域调水工程,2022年底试通航.如图是某段新开河渠的示意图.在二面角
的棱上有A,B两点,直线AC,BD分别在这个二面角的两个半平面内,且都垂直于AB.已知
,
,
,
,则该二面角的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddaa9bfa78f9405cdcc11a1703233715.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/e89e55f7-2f12-4cbe-ab59-a1e428bb09c4.png?resizew=370)
您最近一年使用:0次