What is the difference from an you regular and a regular polygon?

All the sides of a regular polygon have the same length. If two or more sides of a polygon have different lengths, then the polygon is not regular.

This is a tautological question that does not have a proper answer. A regular polygon is one which has all its sides of equal length and all its interior angles of equal measure.

A regular polygon is a polygon in which all sides are the same length.

A regular polygon is a polygon whose sides are equal length and whose angles are all the same value. A non regular polygon is just the opposite of a regular polygon.

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