Question 165 In a quadrilateral PQRS, ∠P=50∘,∠Q=50∘,∠R=60∘. Find ∠S. Is this quadrilateral convex or concave?

Question 165 In a quadrilateral PQRS, ∠P=50∘,∠Q=50∘,∠R=60∘

1.	Question 165 In a quadrilateral PQRS, ∠P=50∘,∠Q=50∘,∠R=60∘. Find ∠S. Is this quadrilateral convex or concave?
Answer» Question 165 In a quadrilateral PQRS, $∠ P = 50^{\circ}, ∠ Q = 50^{\circ}, ∠ R = 60^{\circ}$ . Find $∠ S$ . Is this quadrilateral convex or concave?