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.
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.
convex
concave polygon