Question

ABCD is a trapezium which AB parallel DC. If angle A = 40° Angle B = 40°. Find the measure of other 2 angles​

Answer 1

Answer:

angle D = 120

angle C = 120

Step-by-step explanation:

ABCD is a trapezium which AB parallel DC. and angle A = 40° Angle B = 40°

sum of angle C+B = 180

sum of angle A+D = 180       [because the AB parallel to CD and sum of two                                                     interior angles between two parallel line are 180]

A+D = 180

D = 180 -40 = 120

B+C = 180

C = 180 - 40 = 120

hence ,angle D = 120

angle C = 120