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没太仔细看题,个人觉得此题思路似乎不难

Posted by c0500301036 at 2005-05-24 13:06:00 on Problem 2099
In Reply To:这个怎么做啊…… Posted by:frkstyc at 2005-05-24 12:34:16
将两个平行四边形中心先重合,其中一个绕中心旋转,看能否完全在另一个里。
不知道我有没有看错题:)

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