Angle RPQ is equal to Angle RTS (given). R is the midpoint of QS; QR is equal to RS. Vertical opposite angles PRQ and SRT are also equal. Therefore, triangles PQR and TSR are congruent through the Side-Angle-Side (SAS) criterion.
Given that Angle RPQ equals Angle RTS, R is the midpoint of QS with QR equal to RS, and vertical opposite angles PRQ and SRT are also equal, the triangles PQR and TSR exhibit congruence by the Side-Angle-Side (SAS) criterion.
This congruence is established by the shared side QR equal to RS, the corresponding angles RPQ and RTS, and the fact that R is the midpoint of QS, forming the basis for a geometric proof.
Hence, the congruence of triangles PQR and TSR is logically concluded through the provided information and the SAS criterion in geometric reasoning.