Lesson Check Do you know HOW? Do you UNDERSTAND? C PRACTICES Use the graph for 3. How can the definition of congruence in terms of Exercises I and 2. rigid motions be more useful than a definition of 1. Identify a pair of congruence that relies on corresponding angles congruent figures and and sides? write a congruence C 4. Reasoning Is a composition of a rotation followed by a statement glide reflection a congruence transformation? Explain. 2. What is a congruence @ 5. Open Ended What is an example of a board game in transformation that which a game piece is moved by using a congruence relates two congruent transformation? figures? Practice and Problem-Solving Exercises @ FIXENCE'S A Practice For each coordinate grid, identify a pair of congruent figures. See Problem 1 and 2. Then determine a congruence transformation that maps the preimage to the congruent image. 2 C BS In Exercises 9-11, find a congruence transformation that maps See Problem 3. ALMN to ARST. 9. 10. 11. AM 2 R R