Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 6 - Review Exercises - Page 306: 5

Answer

130$^{\circ}$

Work Step by Step

m$\angle$B=.5(AD-AC) 50=140-AC arc AC=90 arc DC=360-AD-AC arc DC=360-140-90=130$^{\circ}$
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