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Q: If a quadrilateral is a parallelogram then its consecutive angles are?

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In a parallelogram consecutive angles are always supplementary. This means they equal 180.

It is a parallelogram or a rhombus

Every parallelogram, rhombus, rectangle, and square.

Yes.

Not necessarily. A parallelogram is a quadrilateral with 2 sets of 2 parallel sides. Only rectangles and squares have right angles as all four angles - a rectangle is a "special" parallelogram that has all four angles equal; a square is a "special" rectangle that has all four sides of equal length.

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True

True

True

showing consecutive angles are congruent

Consecutive angles in a parallelogram will not be complementary. Complementary would mean the angles would add up to 90 degrees. Consecutive angles add up to 180 degrees, meaning they are supplementary.

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

Not unless the parallelogram is a rectangle. In every parallelogram, consecutive angles are supplementary.

Consecutive angles in a parallelogram are supplementary.

Consecutive angles of a parallelogram are supplementary.

False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.

In a parallelogram consecutive angles are always supplementary. This means they equal 180.

supplementary

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