Answer
$m\angle{CAH}=180^o$
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.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 10 - Geometry - 10.1 Points, Lines, Planes, and Angles - Exercise Set 10.1 - Page 616: 9
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