Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 2 - Section 2.4 - The Angles of a Triangle - Exercises - Page 92: 6c



Work Step by Step

The auxiliary line is underdetermined because there are many ways to satisfy the conditions the question is asking of us. They ask us to draw a line that contains the midpoint of $\overline{AB}$, which can be done in an multitude of ways. Therefore, the auxiliary line is underdetermined.
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