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Creati
Hey there! :)

Parallelograms have angles that measure 180°.

∠A ≈ ∠C

∠B ≈ ∠D

A = 80°
C = 80°

80 + 80 = 160

180 - 160 = 20

20 ÷ 2 = 10

Your answer is the 2nd choice ⇒ 10°

Hope this helps :)
mjam85877
it going to be 10 hope it helps.