题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021070249-91123.jpg)
答案
解析
核心考点
试题【一块边长为10 cm的正方形铁片按如图所示的阴影部分裁下,然后用余下的四个全等的等腰三角形作侧面,以它们的公共顶点P为顶点,加工成一个如图所示的正四棱锥形容器.】;主要考察你对空间几何体的视图与直观图等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021070241-52680.jpg)
求证:(1)AB∥平面EFGH;
(2)GH∥EF;
(3)GH⊥平面SAC.
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021070237-95223.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021070227-63106.png)
A.![]() | B.24π |
C.![]() | D.12π |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021070223-45233.jpg)
A.![]() | B.![]() | C.![]() | D.![]() |
A.![]() | B.24π |
C.![]() | D.12π |