pyramid (not including the vertex)
Prism
Chat with our AI personalities
Since any polygon can be constructed from a combination of other polygons, I would call this rule a "trivial property of polygons".
All polygons have 3 or more sides
Not all polygons have an 'official' name. It is quite acceptable to call a polygon using the number of sides it has. For example a 101ogon. There is a list of some polygons names listed in the related question.
The graphical method is a method used to solve algebraical problems by using graphs.
A football has a curved surface and polygons are flat. You can approximate a curved surface quite well if you use enough polygons but each polygon will still be flat and a football does have a curved (and rough) surface. Using a few thousand polygons you can create an approximation of a football with stitching seams and every detail but you will not have a curved surface you will have an approximation of a curved surface.