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Question
look at this diagram: if $overleftrightarrow{km}$ and $overleftrightarrow{np}$ are parallel lines and $mangle mlo = 121^{circ}$, what is $mangle nol$?
Step1: Identificar ángulos correspondientes
Los ángulos $\angle MLO$ y $\angle NOL$ son ángulos alternos internos.
Step2: Aplicar propiedad de ángulos alternos internos
Para líneas paralelas, ángulos alternos internos son congruentes. Entonces $m\angle NOL=m\angle MLO$.
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$121$