Question

are these triangles similar? yes no

Explanation:

Step1: Recall similarity criterion

Two triangles are similar if two pairs of corresponding angles are equal.

Step2: Identify equal angles

In $\triangle DEF$ and $\triangle RST$, $\angle D = \angle R=71^{\circ}$ and $\angle F=\angle T = 47^{\circ}$.

Answer:

yes