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 5 - Section 5.3 - Proving Triangles Similar - Exercises - Page 244: 27



Work Step by Step

$\frac{DB}{AB}$=$\frac{DE}{AC}$ $\frac{DB}{DB+4}$=$\frac{8}{10}$ 10DB=8DB+32 2DB=32 DB=16
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