All polygons have 3 or more sides
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The primary classification of a polygon is according to the number of sides (or vertices) that it has.If all the sides are of equal length and all the angles are of the same measure then it is a regular polygon.If any of the angles is a reflex angle then it is a concave polygon, otherwise it is convex.
A dodecagon is a regular polygon that can be drawn using rotations. These are normally drawn in a Geometer's Sketchpad.
i drew a picture using a regular polygon for a dogs head
It is a way of covering a surface using multiple copies of one shape (usually a polygon), without gaps or overlaps. The resulting surface is therefore smooth.
Using standardized polygon names, a 54-sided polygon would be called a pentacontakaitetragon.