In fig. PQRS is a cyclic quadrilateral if angle QRS=1100,find angle SPQ. Share with your friends Share 1 Varun.Rawat answered this We have :∠QRS = 110°Since, PQRS is a cyclic quadrilateral, ∠SPQ + ∠QRS = 180° Opposite angles of cyclic quadrilateral are supplementary⇒∠SPQ+ 110° = 180°⇒∠SPQ= 180° - 110°⇒∠SPQ = 70° 1 View Full Answer