A reflection flips an object across a line (called a line of reflection). To reflect an object, you must choose a line of reflection.
A rotation turns an object about a point. To rotate an object, you must choose a point, direction, and angle of rotation.
part (a): reflection
part (b): rotation
Now try (c) and (d) on your own.
Use the eTool below to explore rigid transformations.
Click the link at right for the full version of the eTool: CC3 6-75 HW eTool