## Geometry: Common Core (15th Edition)

Published by Prentice Hall

# Chapter 4 - Congruent Triangles - Common Core Cumulative Standards Review - Selected Response - Page 279: 6

#### Answer

$H$

#### Work Step by Step

Option F is incorrect. $\angle 1$ and $\angle 8$ are supplementary, not congruent. Option G is incorrect. Vertical angles are congruent, but they do not prove that lines are parallel. Option I is incorrect. $\angle 3$ and $\angle 5$ are same-side interior angles, which are supplementary, not congruent. Option H is correct. $\angle 3$ and $\angle 4$ are alternate interior angles, which are congruent. If alternate interior angles are congruent, then the lines are parallel.

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.