1. Test Review Answers: DEFINITIONS (Level 3)

2. If lines k and m are parallel, then a reflection in line k followed by a reflection in line m is a ___________. If ____ is the image of P after the two reflections, then: translation See next page for important note!

3. !!IMPORTANT!! k is the perpendicular bisector of m is the perpendicular bisector of Why?? Because of the definition of reflection that says the pre-image and image are the same perpendicular distance away !

4. If lines k and m intersect at point P, then a reflection across k followed by a reflection across m is a rotation. If A” is the image of A after the two reflections, then: The angle of rotation is 2x°, where x° is the measure of the acute or right angle formed by k and m

5. In the diagram, is reflected in line r, and is reflected in line s. 7. A translation maps onto which segment?

6. In the diagram, is reflected in line r, and is reflected in line s. 8. Which lines are perpendicular to r and s