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(2000•台州)已知正多边形的边心距与边长的比为,则此正多边形为( ) A.正...
(2000•台州)已知正多边形的边心距与边长的比为
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,则此正多边形为( )
A.正三角形
B.正方形
C.正六边形
D.正十二边形
考点分析:
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