Answer
AD=3
Work Step by Step
$\frac{AD}{BD}$=$\frac{EC}{BE}$
$\frac{AD}{6}$=$\frac{4}{8}$
2AD=6
AD=3
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 5 - Review Exercises - Page 273: 21
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