Answer
arc AD=180$^{\circ}$
arc AC=110$^{\circ}$
Work Step by Step
2m$\angle$B=AD-(360-DC-AD)
70=AD-360+70+AD
2AD=360
AD=180
AC=360-AD-DC
AC=360-180-70
AC=110
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 6 - Review Exercises - Page 315: 10
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