How do we graph rotations?

Before graphing rotations these steps have to be in mind:
1. An angle of rotation
2. A direction (clockwise or counter-clockwise)
3. A center of rotation

Rules

90 degrees          180 degrees            270 degrees

(A,B)-(-B,A)       (A,B)-(-A,-B)          (A,B)-(B,-A)

(5,10)-(-10,5)         (5,2)-(-5,-2)             (5,4)-(4,-5)