Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 5 - Section 5.4 - The Pythagorean Theorem - Exercises - Page 240: 10a



Work Step by Step

Let $c=\overline{DF}$ $12^{2}+5^{2}=c^{2}$ $144+25=c^{2}$ $169=c^{2}$ $13=c$
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