ANGLES so ∠BEP = ∠DFE and ∠DFE and ∠DFQ is a straight line angle.Calculation∠DFE = x⇒ y + x = 1800 ⇒ ∠DFQ + ∠DFE = 1800⇒ 3x + x = 1800⇒ 4X = 1800 ⇒ x = 1800/4 = 450Now,⇒ y + 450 = 1800⇒ y = 1800 - 450 ⇒ y = 1350∴ y = 1350