Congratulations, you are now skilled at interpreting the equation of a circle. In this topic, you learned how to determine the radius and the coordinates of the center of a circle. You learned how to write the standard equation of a circle when given the coordinates of the endpoints of its diameter or the coordinates of its center and a point on the circle. You also know how to identify a point on the circle when given the length of the radius and the coordinates of the center of the circle. In addition, you explored the use of the distance formula and midpoint formula in order to solve problems involving the equation of a circle.