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就是内心吧

Posted by frkstyc at 2008-12-28 22:44:54 on Problem 3711
In Reply To:求的是三角形的内切圆圆心的坐标吗？ Posted by:chen881129 at 2008-12-28 22:36:36 
> 求的是三角形的内切圆圆心的坐标吗？
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