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Are opposite angles in a parallelogram supplementary?

Anonymous

∙ 15y ago

Updated: 4/28/2022

No, they are equal. Adjacent angles are supplementary in a prallelogram.

Wiki User

∙ 15y ago

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Q: Are opposite angles in a parallelogram supplementary?

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Continue Learning about Geometry

If opposite angles of a quadrilateral are supplementary is the quadrilateral a parallelogram?

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

Are adjacent angles in a parallelogram are supplementary?

Adjacent angles in a parallelogram are supplementary.

True or False- If opposite angles of a quadrilateral are supplementary then the quadrilateral is a parallelogram?

false

If a parallelogram has one right angle then all of its angles must be right?

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

Are complementary angles consecutive angles in a parallelogram?

The question does not really make sense. Once might ask, "Are consecutive angles in a parallelogram complementary?" in which case the answer is no. Complementary angles are angles which add up to 90 degrees. Consecutive angles are angles next to each other (or follow each other). In a parallelogram, consecutive angles are supplementary (add to 180 degrees). In a parallelogram, opposite angles are equal. You could have a parallelogram where two angles are 45 degree (and thus complementary) and then the other two angles would be 135 degrees.

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