It is a plane figure bounded by 400 straight lines.
The name of a 400 sided polygon is Tetrhectagon.
Quadrocentogon
400 exterior angle = 360/9 = 400
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.
Regular polygon Equilateral polygon Polygon with rotational symmetry
An equilateral polygon is a polygon where the length of all the sides of the polygon are the same length.
The definition of a irregular polygon is any polygon that is not a regular polygon.
No, but a hexagon is a polygon.