Physics 122 Collisions in 2D! From the textbook Pg 509 # 35 - 37, Pg 513 # 38 Physics 112 Practicing the Lens Equation (Worksheet #1 - 16, not #8) Astronomy 120 Video: Secrets of the Sun Math 9 Triangle angle properties for similarity (angle_properties_for_similar_triangles.pdf). Writing the similarity statement and side ratios (similarity_statement_-_practice.pdf). Do #s 1 - 8 on the second page of the similarity statement practice worksheet (above). Do #s 1 - 9 of the new similarity handout (not downloadable).