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Tell whether you can prove that each quadrilateral is a parallelogram. Explain.

Tell whether you can prove that each quadrilateral is a parallelogram. Explain.-example-1
User Wesleywh
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WE know that in any quadrilateral the interior sum of its angles is 360. The missing angle in this case is:


360-121-59-59=121

Now, we also know that if the oposite angles in a quadrilateral are equal then the quadrilateral is a parallelogram.

Therefore the figure shown is a parallelogram.

User Born To Hula
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