How to solve?
You can use the distance formula to find the perimeter and area of a polygon graphed on a coordinate plane. You can also use the distance formula to calculate the radius of a circle and then use the appropriate equations for circumference and area.
An equilateral polygon has all sides congruent. An equiangular polygon has all angles congruent. A regular polygon is a convex polygon that is both equilateral and equiangular.