题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172550-96282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172550-34010.gif)
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14422.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-72215.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14422.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-44907.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-72215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14228.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-31105.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14422.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-44907.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-60283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-17136.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-12484.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172553-47319.gif)
反之,
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-44907.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172553-47319.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14422.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-72215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-31105.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-31105.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-72215.gif)
于是我们得到,对于直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172550-96282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172550-34010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172553-70565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172553-47319.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-72215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172551-14228.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172552-31105.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172536-66746.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172536-82541.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172529-32455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172530-18965.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172530-15881.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172530-68152.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172523-18781.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172523-52845.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172523-93881.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172523-95459.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172516-24134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172516-15622.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172516-97040.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172517-68460.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172506-24995.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172506-95011.gif)
(1)平行于直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172506-43704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172507-81110.gif)
(2)垂直于直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172506-43704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022172507-73246.gif)
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