Question

ABCD is a trapezium in which AB is parallel to CD if angle A=36° and angle81° then find angleC and angleD​

Answer 1

WE KNOW THAT CONSECUTIVE INTERIOR ANGLE 'S SUM IS 180 WHEN TWO LINE ARE PARALLEL.

SO , angle A + angle D = 180°

36° + angle D = 180°

angle D = 180° - 36°

angle D = 144°

similarly, angle B + angle C = 180°

81° + angle C = 180°

angle C = 180° - 81°

angle C = 99°

angle C and angle D is 99° and angle 144°