If lines \( \overleftrightarrow{OQ} \) and \( \overleftrightarrow{RT} \) are parallel and \( m\angle RSP = 52^\circ \), then we can analyze the situation using the properties of parallel lines.
Assuming \( RSP \) and \( TSP \) are angles created by a transversal intersecting the parallel lines \( \overleftrightarrow{OQ} \) and \( \overleftrightarrow{RT} \), the angles \( RSP \) and \( TSP \) can be considered alternate interior angles.
Since \( RSP \) and \( TSP \) are alternate interior angles, they are equal when the lines are parallel. Therefore:
\[ m\angle TSP = m\angle RSP = 52^\circ \]
So, the measure of angle \( TSP \) is \( 52^\circ \).