Rotates 120 degrees clockwise or - 2 * Pi/3
Rotates 135 degrees clockwise or - 3 * Pi/ 4
Rotates 150 degrees clockwise or - 5 * Pi/ 6
Rotates 30 degrees clockwise or - Pi/3
Rotates 45 degrees clockwise or - Pi/4
Rotates 60 degrees clockwise or - Pi/3
Rotates 120 degrees anti-clockwise or + 2 * Pi/3
Rotates 135 degrees anti-clockwise or + 3 * Pi/4
Rotates 15 degrees anti-clockwise or + Pi/12
Rotates 150 degrees anti-clockwise or + 5 * Pi/6
Rotates 30 degrees anti-clockwise or + Pi/6
Rotates 45 degrees anti-clockwise or + Pi/4
Rotates 60 degrees anti-clockwise or + Pi/3