Answer:The answer is:{PQ} over line {RS}To illustrate that $\overline{PQ}$ is congruent to $\overline{RS}$ ($\overline{PQ} \cong \overline{RS}$),Key Points1. Congruent segments: $\overline{PQ} \cong \overline{RS}$ means that the two line segments have the same length.2. *Equal lengths: $PQ = RS$ indicates that the measure of the length of $\overline{PQ}$ is equal to the measure of the length of $\overline{RS}$.Mathematical Representation:$PQ = RS$This equation states that the length of segment $\overline{PQ}$ is equal to the length of segment $\overline{RS}$, which implies that $\overline{PQ} \cong \overline{RS}$.