Geometry: Common Core (15th Edition)

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

Chapter 6 - Polygons and Quadrilaterals - Get Ready! - Page 349: 4


$\overline{AB}$ is parallel to $\overline{CD}$.

Work Step by Step

We could call $\angle ABC$ and $\angle DCB$ alternate interior angles. If two lines or line segments are cut by a transversal, and alternate interior angles are equal, then those lines or line segments are parallel. We see from the diagram that $\angle ABC$ and $\angle DCB$ are congruent; therefore, $\overline{AB}$ is parallel to $\overline{CD}$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.