Geometry: Common Core (15th Edition)

by Charles, Randall I.

Published by Prentice Hall

ISBN 10: 0133281159

ISBN 13: 978-0-13328-115-6

Chapter 6 - Polygons and Quadrilaterals - 6-2 Properties of Parallelograms - Practice and Problem-Solving Exercises - Page 366: 45

Answer

$D$

Work Step by Step

According to theorem 6-4, consecutive angles in a parallelogram are supplementary, meaning the sum of their measures is $180^{\circ}$. This statement corresponds to answer option $D$.

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