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Q: Are opposite angles in a parallelogram supplementary?

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No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.

Adjacent angles in a parallelogram are supplementary.

false

Yes. This is true because opposite angles are congruent and adjacent angles are supplementary.

No. The adjacent angles are supplementary.

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No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.

No. Opposite angles are equal. Adjacent angles are supplementary.

The answer is no. Opposite angles are congruent, Consecutive angles are supplementary.

Adjacent angles in a parallelogram are supplementary.

First of all, you know the opposite sides of a parallelogram are equal because of the definition of a parallelogram. Therefore, two adjacent angles in the parallelogram are supplementary, because same-side interior angles in two parallels and a transversal are always supplementary. Therefore, opposite angles in a paralellogram are equal, because two angles both supplementary to a third angle are equal to each other.

false

True

false

Consecutive angles are supplementary Diagonals bisect each other Opposite angles are congruent Opposite sides are parallel

supplementary

Supplementary.

Yes

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