## Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole

# Chapter 1 - Section 1.2 - Informal Geometry and Measurement - Exercises: 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.

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