SOLUTION: Describe a method for verifying that quadrilateral EFGH is a parallelogram if only the interior angle measures of EFGH are known.
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Question 797705: Describe a method for verifying that quadrilateral EFGH is a parallelogram if only the interior angle measures of EFGH are known.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
EFGH is a parallelogram if and only if the opposite interior angles are pairwise equal.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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