Question

what is an angle that is supplementary to ∠dea?

Explanation:

Step1: Recall supplementary - angle definition

Two angles are supplementary if their sum is 180 degrees. Adjacent angles that form a straight - line are supplementary.

Step2: Identify the adjacent angle to ∠DEA

∠DEB forms a straight - line with ∠DEA at point E. So, ∠DEB is supplementary to ∠DEA.

Answer:

∠DEB