Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 5 - Section 5.4 - The Pythagorean Theorem - Exercises - Page 251: 14b


Right Triangle

Work Step by Step

Using the Pythagorean Theorem... $a^{2}+b^{2}=c^{2}$ $20^{2}+21^{2}=29^{2}$ Simplify... $400+441=841$ $841=841$ Since the sum of the sides squared $(841)$ is equal to the hypotenuse squared $(841)$, the triangle is a right triangle.
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