Parallelograms Opposite Angles are Congruent

In today's geometry lesson, we will prove that in parallelograms, the two pairs of opposite angles are congruent.

I.34) Parallelogram: opposite sides and angles are congruent, Proof

Questions on Geometry: Parallelograms answered by real tutors!

If a quadrilateral has one pair of congruent opposite sides and one pair of congruent opposite angles, can it be proved to be a parallelogram? If not, is there a counterexample to

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PPT - Parallelograms PowerPoint Presentation, free download - ID

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Which is not a property of a parallelogram? A. The opposite sides

QU05 Proof that Opposite Angles of Parallelogram Are Congruent