Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 9 - Section 9.1 - Lines and Angles - Exercise Set - Page 609: 1


$\overleftrightarrow{CD}$, line

Work Step by Step

The symbol/notation for denoting a line is the line with arrows on both sides above two points on the line. We know this diagram is a line because both sides of $l$ have arrows, i.e. $l$ extends indefinitely on both sides.
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