Mathematics, 21.04.2020 22:44 deg12

Which condition is sufficient to show that quadrilateral DEFG is a parallelogram?

A. ∠GDE is supplementary to ∠DEF
B. ∠GDE is supplementary to ∠EFG
C. ∠GDE is supplementary to ∠DEF and ∠EFG
D. ∠GDE is supplementary to ∠DEF and ∠FGD

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Which condition is sufficient to show that quadrilateral DEFG is a parallelogram?

A. ∠GD...