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Which statements prove that a quadrilateral is a parallelogram?

Select each correct answer.

Responses

Quadrilateral DEFG has two sets of consecutive angles that are complementary.
quadrilateral D E F G, has two sets of consecutive angles that are complementary.

Quadrilateral DEFG has diagonals that are congruent.
quadrilateral D E F G, has diagonals that are congruent.

Quadrilateral DEFG has one set of opposite sides that are both congruent and parallel.
quadrilateral D E F G, has one set of opposite sides that are both congruent and parallel.

Quadrilateral DEFG has opposite angles that are congruent.

Which statements prove that a quadrilateral is a parallelogram? Select each correct-example-1
User Nattalia
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A quadrilateral is a parallelogram if it has opposite angles that are congruent, one set of opposite sides that are both congruent and parallel, and congruent diagonals.

A quadrilateral is a parallelogram if it satisfies certain conditions. The statements that prove a quadrilateral DEFG is a parallelogram are:

Quadrilateral DEFG has opposite angles that are congruent.

Quadrilateral DEFG has one set of opposite sides that are both congruent and parallel.

Quadrilateral DEFG has diagonals that are congruent.

User Shibankar
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