True
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.
True
it’s true
No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.
Then it's consecutive angles are supplementary.
True
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.
True
it’s true
It is an impossible quadrilateral since its angles would not sum to 360 degrees but only 180 degrees.
showing consecutive angles are congruent
Not unless the parallelogram is a rectangle. In every parallelogram, consecutive angles are supplementary.
The Parallelogram Consecutive Angles Conjecture states that the consecutive angles in a parallelogram are supplementary. This means that the sum of two adjacent angles in a parallelogram is always 180 degrees. This property follows from the fact that opposite angles in a parallelogram are congruent.
False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.
Consecutive angles of a parallelogram are supplementary.
Consecutive angles in a parallelogram are supplementary.