Elementary Geometry for College Students (5th Edition)

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

Chapter 2 - Section 2.1 - The Parallel Postulate and Special Angles - Exercises: 6


l and t are parallel to each other

Work Step by Step

If any two lines are perpendicular to the same line, then the two lines are in parallel. For instance, line l is perpendicular to m, meaning l intersects m at a 90 degree angle, and line t is perpendicular to m, meaning t intersects m at a 90 degree angle as well. Because both lines intersect m at the same angle, they are parallel.
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