Question

ABCD is a trapezium in which AB || DC. If angle A = angle B = 40°, what are measures of other two angles ?

Answer 1

AB||DC
AD IS TRANSVERSAL
ANGLE A +ANGLE D=180°
Angle A=40°
40+D=180
D=180-40
D=140°
Similarly
Angle C=140°[angle a=Angle B=40°]

Answer 2

angle d=180-40=140 and angle c=140