Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-4 Measuring Angles - Practice and Problem-Solving Exercises - Page 31: 14

Answer

20 degrees; Acute

Work Step by Step

We use a protractor to see that the angle is 20 degrees. Because 20 degrees is below 90 degrees, it is classified as an acute angle.
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