Question

can a quadrilateral ABCD be a parallelogram if
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Answer 1

Answer:

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Step-by-step explanation:

Yes, a quadrilateral ABCD be a parallelogram if ∠D + ∠B = 180° but it should also fulfilled some conditions which are: The sum of the adjacent angles should be 180°. ... Draw a rough figure of a quadrilateral that is not a parallelogram but has exactly two opposite angles of equal measure.

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Answer 2

Answer:

If opposite sides are equal and parallel, them only a quadrilateral can be a parallelogram.

Step-by-step explanation:

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