Rotation
To have a rotation you need to have a point of rotation, angle of rotation, and direction (clockwise or counterclockwise). Such as in this example we are rotating points A, from the distance of point P, x amount of degrees counter clockwise.we will call this new point A'. AS you can see in the example the direction highlighted in pink as to the direction highlightes in blue isn't. This is why direction,distance, and point is needed in order to get the rotation correctly.