__ __ __ __ Given: PQ @ PS; QR @ SR Ð1 @ Ð2 Prove: Ð3 @ Ð4
__ __ __ __ Given: PQ @ PS; QR @ SR Ð1 @ Ð2 Prove: Ð3 @ Ð4__ __ PQ @ PS Given Ð1 @ Ð2 Given __ __ PR @ PR A line segment is congruent to itself. (Identity) DPQR @ DPSR Side-Angle-Side Ð3 @ Ð4 Corresponding parts of congruent triangles. Notice that you did not need to be given that __ __ QR @ SR, for it was not used. Edwin