Exploring Rotations on the Coordinate Plane

When rotating points 90 degrees CCW, describe the rule for the corresponding point as it moves with regard to the center of rotation. (x, y) --> (____, _____)

When rotating points 180 degrees CCW, describe the rule for the corresponding point as it moves with regard to the center of rotation. (x, y) --> (____, _____)

When rotating points 270 degrees CCW, describe the rule for the corresponding point as it moves with regard to the center of rotation. (x, y) --> (____, _____)