Triangle ART is congruent to triangle PEN by SSS test. So, AR = PE, RT = EN, and
Suppose that we have two triangles ∆ ABC and∆PQR with their corresponding sides are AB and PQ, BC and QR, AC and PR. After we proved triangle ABC congruent to triangle PQR by SSS test then is it compulsory to write triangle ABC congruent to triangle PQR in a particular way that is their names must be in correspondence with each other.