Elementary Geometry for College Students (6th Edition)

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

Chapter 1 - Section 1.7 - The Formal Proof of a Theorem - Exercises - Page 56: 13

Answer

If two lines are perpendicular, then these lines meet to form a right angle.

Work Step by Step

Given: The blue line and the black line are perpendicular. Proof: We can see that the blue line and the black line meet to form a right angle. Therefore, if two lines are perpendicular, then these lines meet to form a right angle.
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