题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014723-82653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014724-76318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014724-79036.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014724-81282.gif)
解析
核心考点
试题【如图,已知球O的球面上四点A、B、C、D,平面ABC,,则球O的体积等于 。】;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/20191021/20191021014719-51952.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014720-69112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014703-77220.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014703-24044.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014703-25441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014703-10191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014704-95396.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014704-30569.gif)
(1)求直线C1B与底面ABC所成角的正弦值;
(2)在棱
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014704-30220.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014704-65315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014705-64820.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014705-57999.gif)
(3)在(2)的条件下,若
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014705-28609.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014705-48446.gif)
如图所示,四棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014653-85524.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014653-20991.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014653-70299.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014653-20991.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014653-58151.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014654-70500.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014654-54024.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014654-93957.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014654-84427.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014655-30806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014655-29441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014655-15612.jpg)
(1)求证:;
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014655-45046.gif)
(2)求三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014655-49271.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014638-81193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014638-64352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014638-12711.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014638-96953.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-56823.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-69389.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-71845.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014638-64352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-35288.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-92882.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-29395.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-44756.gif)
(2)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014639-96757.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014640-17316.gif)
(3)若M是PC的中点,求三棱锥M—ACD的体积.
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-25131.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-29362.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-51539.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-86356.gif)
线段
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-86356.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-51539.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-71966.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-51539.gif)
垂足
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-29298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-51539.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-73219.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-68522.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-14366.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014621-51539.gif)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-86797.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-20606.gif)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-30448.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021014622-92362.jpg)
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