Question

(A) 60°
(B) 70°
(C) 80°
(D) 120°

Answer 1

....in a parallelogram, opposite angles have the same measure.

∠QRS =∠QPT

the sum of the angles of a triangle =180°.

triangle QPT :

∠QPT = 180-50-70=60°

∠QPT = 60° according to the property:If a quadrilateral is a parallelogram, then its opposite angles have the same measure.:∠QRS=60°