Move Point A around and see if you can put the colored points in the correct position. You will know if you are correct.
Point A is the original point. Point B should be the rotation of Point A about the origin 90 degrees. Point C should be the rotation of Point A about the origin 180 degrees. Point D should be the rotation of Point A about the origin 270 degrees. Point E should be the rotation of Point A about the origin 360 degrees.