Elementary Geometry for College Students (6th Edition)

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

Chapter 4 - Section 4.4 - The Trapezoid - Exercises - Page 202: 29


1. In a trapezoid, the bases are parallel to each other by definition. 2. The two corresponding angles are cut by a transversal. 3. These angles will be supplementary if and only if the original bases were parallel. 4. Thus, these angles will be supplementary if an only if it is a trapezoid.
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