Question

Can a quadrilateral ABCD be a parallelogram if

i. Angle D + Angle B = 180°​

Answer 1

Answer:

no, because in a parallelogram opposite angles are equal.

Answer 2

Answer:

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In a parallelogram sum of adjacent angles is 180°

If Angle D + Angle B= 180° , then it is a parallelogram

Hope it helps