Question

fedc ≅ rstu. what is m∠r?
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Explanation:

Step1: Recall Congruent Polygons

Congruent polygons have corresponding angles equal. So, \( \angle F \) in \( FEDC \) corresponds to \( \angle R \) in \( RSTU \) because \( FEDC \cong RSTU \).

Step2: Identify Corresponding Angle

From the diagram, \( m\angle F = 142^\circ \). Since corresponding angles of congruent polygons are equal, \( m\angle R = m\angle F \).

Answer:

\( 142 \)