Question

△ijk≅△tus. what is m∠s?

Explanation:

Step1: Recall property of congruent triangles

Corresponding angles of congruent triangles are equal. Since $\triangle IJK\cong\triangle TUS$, $\angle S$ corresponds to $\angle K$.

Step2: Identify measure of $\angle K$

From $\triangle IJK$, we see that $m\angle K = 77^{\circ}$.

Answer:

$77$