Elementary Geometry for College Students (7th Edition)

by Alexander, Daniel C.; Koeberlein, Geralyn M.

Published by Cengage

ISBN 10: 978-1-337-61408-5

ISBN 13: 978-1-33761-408-5

Chapter P - Preliminary Concepts - Chapter P Review Exercises - Page 29: 23

Answer

Angle ABC is a right angle.

Work Step by Step

We are told that if an angle has a 90 degree measure, then it is a right angle. We know that angle ABC has a 90 degree measure. Thus, from this, it must follow that angle ABC is a right angle.

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