题目
题型:北京期末题难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004838-50444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-60212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-99833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-71736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-21402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-36922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004839-12324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004840-86765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004840-88238.png)
(2)如图2,分别以
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004840-34541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-40529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-71767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-98300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-91072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-41452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004841-51032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004842-43808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004842-73176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004842-50001.png)
(3)在四边形
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004843-67068.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004843-85950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004843-65216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004843-76003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004844-50225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004844-87421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004844-14115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004844-43528.png)
答案
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004844-16782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004845-16378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004845-80339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004845-49514.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004845-56822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004846-40552.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004846-49347.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004846-28559.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004846-51954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004847-76270.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004847-30883.png)
(2)答:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004847-38719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004847-64508.png)
证明:如图2,过点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004848-55425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004848-69249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004848-36276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004848-53725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004849-60322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004849-67729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004849-94758.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004849-94130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004850-40905.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004850-44759.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004850-61199.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004850-26855.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004851-99976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004851-37202.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004851-67080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004851-87398.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004852-41317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004852-10609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004852-94180.png)
∴点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004852-47696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004853-80949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004853-43695.png)
(3)答:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004853-94518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004854-21501.png)
核心考点
试题【(1)如图1,为的角平分线,于,于,,请补全图形,并求与的面积的比值;(2)如图2,分别以的边、为边向外作等边三角形和等边三角形,与相交于点,判断与的数量关系,】;主要考察你对等边三角形性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026004835-30835.png)
B.2个
C.1个
D.0个
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