## Geometry: Common Core (15th Edition)

Published by Prentice Hall

# Chapter 2 - Reasoning and Proof - Chapter Review - Page 131: 28

#### Answer

The sum of the measures of $\angle1$ and $\angle2$ is 180.

#### Work Step by Step

According to the Law of Detachment, if the hypothesis of a true conditional matches a given statement, you can make a conclusion based on the conditional.

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