Question

ABCD is a trapezium,AB ll DC and ∆A=∆B if ∆A=50°, find ∆D answer please​

Answer 1

If AB ║ DC, then ∠A and ∠C are co-interior angles. So, their sum is 180°.

∠A+∠D = 180°

50°+ ∠D = 180°

∠D = 130°.