Question

I've never even been taught this so idk please help! Thanks

Answer 1

(B) 52°

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