As many as you like: there is no limit.
about 3 centimeters long.
It could be a regular pentagon
Yes. A rectangle with adjacent sides of 1 cm and 10 cm.
Use a ruler u might find that is not exactly a certain amount of centimeters
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.