Lesson Worksheet:Congruence of Triangles: SSS, SAS, and RHS - Nagwa In this worksheet, we will practice proving that two triangles are congruent using either the side-side-side (SSS), the side-angle-side (SAS), or the right angle-hypotenuse-side (RHS) criterion. Q1: In the given figure, triangle ๐ด ๐ต ๐ถ and triangle ๐ต ๐ถ ๐ท have two equal sides and share one equal angle.