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两个相似多边形的面积之比为1:3,则它们周长之比为( ) A.1:3 B.1:9...
两个相似多边形的面积之比为1:3,则它们周长之比为( )
A.1:3
B.1:9
C.1:
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D.2:3
考点分析:
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