勾股定理有着悠久的历史它曾引起很多人的兴趣.1955年希腊�行了二枚以勾股图为背景的邮票.所谓勾股图是指以直角三角形的三边为边�外作正方形 Template




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tomski勾股定理有着悠久的历史它曾引起很多人的兴趣.1955年希腊�行了二枚以勾股图为背景的邮票.所谓勾股图是指以直角三角形的三边为边�外作正方形 coloring