Elementary Geometry for College Students (7th Edition) Clone

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 1 - Review Exercises - Page 75: 31

Answer

It is an acute angle with a measure less than 50$^{\circ}$.

Work Step by Step

If the sum of angles 1 and 2 is more than 130$^{\circ}$ and the sum of all 3 angles is 180$^{\circ}$, then angle 3 must have a measure less than 50$^{\circ}$. Any angle less than 90$^{\circ}$ is acute so angle 3 is also an acute angle.
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