Question

ABCD is a trapezium in which AB DC. If angle A = angle B 40 find the measures of each other two angles​

Answer 1

Step-by-step explanation:

angle A + angle D = 180°

40° + angle D = 180°

angle D = 180-40 = 140°

angle B + angle C = 180°

40° + angle C = 180°

angle C = 180-40 = 140°

So the measure of other two angles is 140°.