Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 6 - Section 6.4 - Some Constructions and Inequalities for the Circle - Exercises - Page 310: 9

Answer

The tangent is in red in the attached picture.

Work Step by Step

First, draw the circle, placing point O at the center. Then, recall that the tangent to the circle through D is the line that is parallel to the circle when it goes through point D.
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