Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 12 - Section 12.1 - Angles and Polygons - Exercise - Page 387: 3



Work Step by Step

We know that an angle is a right angle if it is 90 degrees. An angle is acute if it is less than 90 degrees, while it is obtuse if it is between 90 and 180 degrees. Additionally, we know that the angle measures $90^o$.
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