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一幅美丽的图案,在某个顶点处由三个边长相等的正多边形镶嵌而成,其中两个分别为正十...
一幅美丽的图案,在某个顶点处由三个边长相等的正多边形镶嵌而成,其中两个分别为正十二边形、正方形,则另一个为( )
A.正三角形
B.正四边形
C.正五边形
D.正六边形
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