Coordinates and Rotations

Rotate the pre-image around the origin for each of the following angles:[br][list][*]90 degrees[/*][*]180 degrees[/*][*]270 degrees[/*][/list][br]What do the coordinates tell you about the location of the image?
What information is needed to describe the rotation?[br][br]How do the coordinates change?

Information: Coordinates and Rotations