Definition: In geometry, a semiregular polygon is a polygon that has three or more sides. Semiregular polygons are also known as regular semiregular polygons (RSR). They can be classified into two types: Regular RSR and Irregular RSR. Regular RSRs have all the angles equal to 60 degrees, and all sides of equal length. Irregular RSRs do not follow this rule, having some or no angles at 60 degrees.
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