The distance from the center to anywhere on thecircumference is the same distance
Create a circle equation using the distance formula
Radius “R”: Distance from the center to any where on the circumference
Center (h,k) : The center is fixed, so
use (x2,y2) as the center of the circle
Circumference (x,y) : The coordinatesof any point on the circumferencevaries, so we replace (x1,y1) usingvariables