Module 1 lesson 20 & 21 Summative Assessment 1. Each exercise below shows a sequence of rigid motions that map a pre-image onto a final image. Identify each rigid motion in the sequence, writing the composition using function notation. Trace the congruence of each set of corresponding sides and angles through all steps in the sequence, proving that the pre-image is congruent to the final image by showing that every side and every angle in the pre-image maps onto its corresponding side and angle in the image. Finally, make a statement about the congruence of the pre-image and final image. Sequence of Rigid Motions (2) Composition in Function Notation Sequence of Corresponding Sides Sequence of Corresponding Angles Triangle Congruence Statement