题目
题型:山东省中考真题难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144611-52751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144612-24400.png)
B.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144612-27771.png)
C.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144612-93905.png)
D.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144612-80273.png)
答案
核心考点
举一反三
(1)当x=
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144556-49698.png)
(2)当CQ=
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144556-73459.png)
(3)①当CQ=
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144556-61768.png)
②当CQ=
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144556-43728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144556-46484.png)
(1)求证:AE·FD=AF·EC;
(2)求证:FC=FB;
(3)若FB=FE=2,求⊙O的半径r的长.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144540-79988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144525-27909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144526-90509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144526-67445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144526-38699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144527-10894.png)
(1)当点B与点D重合时,求
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144527-71246.png)
(2)设△BCD的面积为S,当
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144527-46862.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144527-14627.png)
(3)连接MB,当MB∥OA时,如果抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144528-66002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103144528-92386.png)
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