what is a parallelogram?



what is a parallelogram?

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Ahmed Ragab 2 years 2020-09-21T20:49:51+00:00 1 Answer 392 views 0

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    parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. The congruence of opposite sides and opposite angles is a direct consequence of the Euclidean parallel postulate and neither condition can be proven without appealing to the Euclidean parallel postulate or one of its equivalent formulations.
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