Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 8 - Geometry - Review Exercises - Page 611: 2

Answer

Line CD (draw a line on top with arrows in both directions).

Work Step by Step

CD is a line because it is infinite in both direction. A line is named by any two points on it and the symbol is a line on top with arrows in both directions.
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