# Chapter 10 - Geometry - 10.1 Points, Lines, Planes, and Angles - Exercise Set 10.1 - Page 616: 9

$m\angle{CAH}=180^o$ The angle is straight.

#### Work Step by Step

point C is at $0^o$ point H is at $180^o$ Thus, $m\angle{CAH} =180^o-0^o=180^o$ Thus, $\angle{CAH}$ is straight.

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.