I was wondering the same thing and found this...
"The first polygon is always the universal polygon which represents the coverage boundary."
http://www.utdallas.edu/~briggs/poec6382/arcintro.ppt
A polygon with an unknown number of sides is called an "indeterminate polygon." This term is used when the exact number of sides of the polygon is either unspecified or cannot be determined based on the information provided. In mathematics, it is important to define the characteristics of a polygon clearly, including the number of sides, angles, and vertices, to accurately analyze and classify geometric shapes.
it seems to me that the only polygon of your description is a square
A type of polygon is a rhombusial polygon, trysectalnict polygon, and a equilateral polygon.
A triangle (not traingle) is a polygon. It can be a regular polygon but need not be.
an arrow is or isn't a polygon?
Polygon B is an octagon.
The definition of a irregular polygon is any polygon that is not a regular polygon.
An equilateral polygon is a polygon where the length of all the sides of the polygon are the same length.
Regular polygon Equilateral polygon Polygon with rotational symmetry
No, but a hexagon is a polygon.
A polygon is a Two dimensional figure that is closed.
Yes. A polygon is a closed figure.