题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225412-51954.png)
答案
解析
试题分析:由斜二测画法可知原图应为:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225413-48096.jpg)
其面积为:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225413-73072.png)
故答案为4.
核心考点
试题【右图所示的直观图,其原来平面图形的面积是 .】;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/20191020/20191020225407-30355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225355-68299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225355-88509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-89346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-11953.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-90297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-33645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225357-48557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225357-30077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225357-15429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225357-12716.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-33645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225358-28219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225355-68299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-33645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225358-43519.png)
(1)求该几何体中间一个空心球的表面积的大小;
(2)求图中阴影部分绕直线
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225356-33645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225333-58623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225333-64581.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225333-99113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225334-76100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225334-58201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225334-46088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225334-23046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225335-90170.png)
(1)求三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225335-55204.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225335-47261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225335-20589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225335-45206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225334-58201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225336-67429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225336-31811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225336-86640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225322-23099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225322-56930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225322-29847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225323-63724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225323-12728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225323-29909.png)
(Ⅰ).求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225324-63976.png)
(Ⅱ).设平面
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225324-52478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225324-92294.png)
①.求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225324-98325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225322-56930.png)
②.若
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225324-42040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-20234.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-77939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-51944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-44108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-11679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225252-68718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225252-85206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225252-46969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225251-44108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225252-87205.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225252-34178.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225253-88126.png)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020225253-44977.png)
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