Composite of Two Reflections over Parallel Lines

Explore what happens when you reflect twice.

Directions: 1. Click "Show Reflection #1", then "Show Reflection #2". 2. Play around with the points on the lines of reflection (Mirror) by clicking and dragging. 3. Uncheck "Show Reflection #1". 4. Continue to move the points around to make observations about the pre-image and the final-image shown. 5. Answer the questions below.

1.

What do you notice about the pre-image and the final image (Reflection #2)?