Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 1 - Section 1.2 - Informal Geometry and Measurement - Exercises - Page 18: 7


$\angle{ABC}$, $\angle{ABD}$, $\angle{DBC}$ are all angles in the figure.

Work Step by Step

Both of the smaller angles, as well as the larger angle formed by their union, compose the following figure.
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