Question

△dec≅△klm. what is m∠d?

Explanation:

Step1: Recall property of congruent triangles

Corresponding angles of congruent triangles are equal. Since $\triangle DEC\cong\triangle KLM$, $\angle D$ corresponds to $\angle K$.

Step2: Identify measure of $\angle K$

From the $\triangle KLM$, we see that $m\angle K = 60^{\circ}$.

Answer:

$60$