Question

in an isosceles trapezium , show that the opposite angle are supplementary. how with process of it

Answer 1

because they are interior angle on the same side of transversal

Answer 2

Hey user,
I am continuing the answer

Angle C=AngleD
therefore,
Angle A+Angle D=180°
Angle A+Angle C=180°

Similarly,
Angle B + Angle D =180°
PROVED