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Explanation:
∠1 congruent ∠4
XP congruent to TY
Since R is midpoint, it divides XY into two equal parts
So, XR is congruent to RY
∠QRP is congruent to ∠SRT. Since the angles are vertical angles
QP is parallel to TS
∠PQR is congruent to ∠TSR since both angles ar