Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter P - Preliminary Concepts - P.3 - Informal Geometry and Measurement - Exercises P.3 - Page 22: 2

Answer

Angle DEF is larger than angle ABC.

Work Step by Step

Without using a protractor, we can see that angle DEF is larger than 90 degrees while ange ABC is less than 90 degrees. Thus, we can conclude that angle DEF is larger than angle ABC.
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