Elementary Geometry for College Students (5th Edition)

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

Chapter 7 - Section 7.2 - Concurrence of Lines - Exercises - Page 337: 29c



Work Step by Step

We know that AQ must represent 1/3 of the length of the altitude. Thus, it follows: $AN = 3(3.5) = 10.5$
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