题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-67874.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-32262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-67228.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-42134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-95093.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-97240.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-24509.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-42134.gif)
且三直线不共点,故
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-72682.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-36919.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-67874.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-91559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174415-72225.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174415-45191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174415-88640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174415-53090.gif)
综合上述结果,此三直线构成三角形的条件是
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174413-42134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174414-95093.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174406-31424.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174406-48380.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174407-75575.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174407-27400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174407-75575.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174407-27400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174401-12230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174402-54320.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174354-66036.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174355-58894.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174355-69707.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174355-99811.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174355-74540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174346-79335.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174346-92769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-22019.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-47312.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-73913.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-80867.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174346-79335.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-47312.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174347-57051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174339-29571.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174339-77467.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174339-72303.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022174339-29571.gif)
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