题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032655-86369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032656-42200.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032656-22599.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032656-93386.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032656-22980.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032656-10026.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032657-72888.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032657-41914.gif)
解析
核心考点
试题【三棱锥中,,,,,若四点在同一个球面上,则在球面上两点之间的球面距离是_____ .】;主要考察你对空间几何体的结构特征等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032645-66746.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-45233.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-19102.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-36874.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-96677.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-64100.gif)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032646-77611.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032647-92284.gif)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032647-42982.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032631-58348.jpg)
如图,在长方体
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032631-66265.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032632-74654.gif)
(Ⅰ)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032632-95146.gif)
(Ⅱ)当E为AB的中点时,求点A到面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032632-16958.gif)
(Ⅲ)AE等于何值时,二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032632-79986.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032633-81320.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032625-47686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032625-23562.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032625-52686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032626-64708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032626-82923.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032626-52155.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032626-56057.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032627-33757.jpg)
A.![]() | B.![]() | C.![]() | D.与![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032609-16285.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032610-12280.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032610-46685.jpg)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032610-85112.gif)
(2)求三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032610-93712.gif)
(3)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032610-11725.gif)
如图,矩形ABCD和梯形BEFC所在平面互相垂直,BE∥CF且BE<CF,∠BCF=
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032557-82962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032557-99317.gif)
(Ⅰ)求证: AE∥平面DCF;
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032557-51864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032558-63018.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032558-17282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032558-99058.jpg)
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