Question

ABCD is a trapezium in whicH AB is parallel to DC.if angle A=40 angle B=40 degree,what are the measures of the other two angles​

Answer 1

Answer:

C = 140°

D = 140°

Step-by-step explanation:

∠A + ∠D = 180°     ----------------> AB || CD ∴ Consecutive angles are supplementary.

40 + ∠D = 180°

∠D = 140°

In the same way,

∠B + ∠C = 180°     ----------------> AB || CD ∴ Consecutive angles are supplementary.

40 + ∠C = 180°

∠C = 140°

Hope this helps! :)