Answer
arc AD=173.33$^{\circ}$
arc AC=93.33$^{\circ}$
arc DC=93.33$^{\circ}$
Work Step by Step
2m$\angle$B=AD-($\frac{360-AD}{2}$)
80-AD=-$\frac{360-AD}{2}$
160-2AD=-360+AD
3AD=520
AD=173.33
AC=DC=$\frac{360-AD}{2}$
AC=DC=93.33
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 6 - Review Exercises - Page 319: 9
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