ABCD is a trapezium,AB ll DC and ∆A=∆B if ∆A=50°, find ∆D answer please
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If AB ║ DC, then ∠A and ∠C are co-interior angles. So, their sum is 180°.
∠A+∠D = 180°
50°+ ∠D = 180°
∠D = 130°.
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