Question

In trapezium ABCD Side AD //side BC if m A = 108° then what is the measurement of B​

Answer 1

Answer:

Step-by-step explanation:

Given : AD || BC

So , Using Sum of Adjacent Angle

Sum of Adjacent Angle = 180°

    ∠A + ∠B  = 180°

  108° + ∠B  = 180°

             ∠B   = 180° - 108°

             ∠B  = 72°            Ans.