Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 6 - Review Exercises - Page 315: 24f

Answer

GD=1

Work Step by Step

GD(AD-GD)=EG(GB) 9GD-GD$^2$=8 GD$^2$-9GD+8=0 (GD-8)(GD-1)=0 Since GD appears shorter in the picture we'll say GD=1 while AG=8.
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