Question

find ( mangle bfc ).
( mangle bfc=square )

Explanation:

Step1: Identify vertical angles

Vertical angles are equal. $\angle BFC$ and $\angle EFD$ are vertical angles.

Step2: Determine the measure

Since $\angle EFD = 28^{\circ}$, then $m\angle BFC=28^{\circ}$.

Answer:

$28$