Question

ABCD is a quadrilateral in which P,Q,R and S are midpoint of the sides AB, BC,CD,and DA .AC is a diagonal . show that a) SR || AC or SR =1/2 of AC b) PQ = SR c) PQRS is a parallelogram . d) if angle S =80° find angle R​

Answer 1

(i) SR || AC and SR = 1 2 AC 
(ii) PQ = SR 
(iii) PQRS is a parallelogram

Answer 2

pqrs is a required parallelogram...