Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 1 - Section 1.2 - Informal Geometry and Measurement - Exercises - Page 17: 16

Answer

$R$ is the point of intersection between lines $\overleftrightarrow{AB}$. The measures of $\angle1$ and $\angle2$ are equivalent.

Work Step by Step

Point R is the only point where both lines cross, so Point R is the point of intersection. The measures of vertical angles (angles opposite each other and formed by intersecting lines) are congruent. Angles 1 and 2 both fit this description, so the measures of $\angle1$ and $\angle2$ are equivalent.
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.