题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-44109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-26993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53892.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130846-69158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130846-17376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130846-81515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130846-80182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130846-93042.png)
小题1:求
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-12167.png)
小题2:若平行移动
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-60116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-80841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-66521.png)
小题3:在平行移动
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-60116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-63600.png)
答案
小题1:40°
小题2:2
小题3:存在,60°
解析
(1)∵
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-44109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-11894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-17891.png)
(2)∵
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-44109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-95663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-11852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130849-28695.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-80841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130847-66521.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130849-14525.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-44109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130849-82454.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-44109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130845-53221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130849-12766.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130850-45173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130848-63600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130850-35967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130850-67040.png)
∴存在
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130850-45933.png)
核心考点
试题【如图,已知直线//,,、在上,且满足,平分.小题1:求的度数小题2:若平行移动,那么:的比值是否随之发生变化?若变化,找出变化规律;若不变,求出这个比值.小题3】;主要考察你对点、线、面、体等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130841-75909.png)
A.∠A+∠ADC=180°→AB∥CD |
B.AD∥BC→∠3=∠4 |
C.AB∥CD→∠ABC+∠C=180° |
D.∠1=∠2→AD∥BC |
A.互相平行 | B.互相垂直 | C.交角是锐角 | D.交角是钝角 |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130830-99703.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130831-11288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130831-10273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130823-54497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130810-97358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130810-91473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130811-43163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130811-20915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130811-92926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130811-10689.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130811-37857.png)
能表示
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130810-91473.png)
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