Thinking Mathematically (6th Edition)

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: 21


Angle: 51 degrees Complement: 39 degrees

Work Step by Step

Let x be the measure of the angle's complement. Thus, x+12 will the angle. x+ (x+12) = 90 Solving algebraically, 2x +12 =90 2x= 90-12 2x=78 x=39 The angle will be x+12 = 39+12= 51.
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