[tex]PR\cong TR[/tex]
Reason: Given
[tex]\angle P\cong\angle T[/tex]
Reason: Given
[tex]m\angle PRQ\cong m\angle SRT[/tex]
Reason: Definition of Vertical angles
If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent by ASA (Angle-Side-Angle).
