Answer:
(B) 52°
Step-by-step explanation:
The measure of a linear angle (∠BED) is 180°, so the sum of the two named angles will be that.
∠AED + ∠AEB = ∠BED = 180°
128° + ∠AEB = 180°
∠AEB = 52° . . . . . . . . . . . . subtract 128° from both sides of the equation
