Vertically opposite angles are congruent. Thus Angle AFD is vertical to angle AFB
<h3>What are vertical angles?</h3>
Vertical angles are the angles opposite each other when two lines cross.
In other words, vertical angles are a pair of opposite angles formed by intersecting lines.
Vertically opposite angles are congruent.
Therefore, the angle vertically opposite to angle EFD is as follows;
AFB ≅ EFD (vertically opposite angles)
learn more on vertical angles here:brainly.com/question/13284533
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