Question

ABCD is a quadrilateral in which AB||DC AD=BC. Prove that angleA is equal to angle B and angle C is equal to angle D

Answer 1

probably by angle sum property

Answer 2

Given:-AB//CD
AD=BC
To Prove:-angle A=angle B
angle C=angle D
Construction:-draw Diagonal Ac
proof part:-. by the help of given 2 condition congurent both of triangles formed by the Diagonal AC after that by using c.p.c.t angle A will equal to angle B and rest vice versa