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54 is the right answer for the value of y
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∠AOE + ∠BOE = 180
➜ Linear Pair should make 180°
⇒ 3x + 72 = 180
⇒ 3x = 180 - 72 = 108
⇒ x = 108 ÷ 3 = 36
∠AOC + ∠COD + ∠DOB = 180
⇒ 36 + 90 + y = 180
⇒ 126 + y = 180
⇒ y = 180 - 126 = 54°
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