CLASS-8
PROPERTY OF TRAPEZIUM

TRAPEZIUM -

In quadrilateral when one pair of sides is parallel, is considered as a trapezium. In the figure, ABCD is a trapezium in which AB || DC but AD is not parallel to BC. AD & BC are called oblique sides.

AB || DC, 

So, ∠A + ∠D = 180⁰

And, ∠B + ∠C = 180⁰