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我考虑如果线段不相交，切点（）位置是极大吧

Posted by sothink at 2009-10-14 16:34:54
In Reply To:Re:直线会和线段AB有交点么 Posted by:guoxi at 2009-10-14 16:25:26 
> 恩，会的。
> 也许可以分两种情况。
> 1) MN与AB相交，∠AQB = [min, 180].
> 2) MN与AB不想交，∠AQB ?
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