Compare the amount of rotation associated with the vertices of a polygon. Metes are points which are like the vertices (corners) of a polygon. It is guaranteed to be the vertex of the convex hull of the polygon. For calculating the area or centroid of a polygon that contains circular segments. Objects created with polygon meshes must store different types of elements. Any surface is modelled as a tessellation called polygon mesh. Using bitmaps in modeling polygon shapes has many drawbacks. Every regular polygon and every triangle is a tangential polygon. Every regular polygon and every triangle is a cyclic polygon. The set of rotational symmetries of a polygon forms a finite cyclic group. A triangle is a polygon with 3 sides. It is analogous to a spherical polygon, whose sides are great circles. There exist many different file formats for storing polygon mesh data. Not every polygon has a circumscribed circle. A polygon with five sides is a pentagon.