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Question
- m∠prs = ______
Step1: Identificar ángulos adyacentes
El ángulo $\angle PRS$ es la suma de $\angle PRT$ y $\angle TRS$.
Step2: Sumar los ángulos
Dado que $\angle PRT = 81^{\circ}$ y $\angle TRS=42^{\circ}$, entonces $m\angle PRS=81^{\circ}+ 42^{\circ}$.
$m\angle PRS = 123^{\circ}$
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$123^{\circ}$