Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 6 - Polygons and Quadrilaterals - 6-3 Proving That a Quadrilateral Is a Parallelogram - Practice and Problem-Solving Exercises - Page 372: 14


We cannot determine if this quadrilateral is a parallelogram because only one diagonal is marked as being bisected by a line segment. We would need the other diagonal to be marked as being bisected before we can use Theorem 6-11 to prove that this quadrilateral is a parallelogram.

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