The angle supplementary to ∠AFD is: ∠EFD
How to find the supplementary angles?
Supplementary angles are two angles whose measures add up to 180 degrees. They can be adjacent or non-adjacent. When the two angles are adjacent, they form a straight angle. For example, angles measuring 100° and 80° are supplementary because 100° + 80° = 180°.
Thus, from the given diagram we can say that:
The angle supplementary to ∠AFD is: ∠EFD