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已知abc为三角形ABC的三边的长,且满足a^2+b^2+c^2=ab+bc+ac,则ABC的形状是等边三角形

Floor 1 巨大八爪鱼 7/26/14 18:06 已知abc为三角形ABC的三边的长,且满足a^2+b^2+c^2=ab+bc+ac,则ABC的形状是等边三角形

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