Question

what is an angle that is adjacent to ∠cfd?

Explanation:

Step1: Recall adjacent - angle definition

Adjacent angles share a common side and a common vertex and have no interior - points in common.

Step2: Identify adjacent angle to ∠CFD

In the given figure, ∠CFB shares the common side $\overrightarrow{CF}$ and the common vertex F with ∠CFD.

Answer:

∠CFB