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这个形状有特色啊,感觉很紧凑。其实可以把大家的30块集中起来,看看谁的形状周长最长和最短。这个图就很短。
嗯,它的图凹进去几块,所以就显得周长比较短。
不觉得有点问题吗?
经yvonne指点,此30块拼图果然有些问题,不过还是贴在这里,不动了,呵呵。