In the given figure, and
Find the values of and
∠DCF = ∠DAB
⇒ x = 75° [Exterior angle is equal to the interior opposite angle.]
Now,
∠DCF + ∠DEF = 180° [Opposite angles of a cyclic quadrilateral]
⇒ x + y = 180°
⇒ 75° + y = 180°
⇒ y = 105°