Elementary Geometry for College Students (5th Edition)

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

Chapter 10 - Section 10.2 - Graphs of Linear Equations and Slope - Exercises - Page 466: 39

Answer

It is a trapezoid.

Work Step by Step

For it to be a trapezoid, the slopes of one pair of opposite sides are equal. Thus, we use the slope formula: $ m_1 = \frac{2c-0}{2b-0}=c/b$ $ m_2 = \frac{c-0}{a+b-a}=c/b$ The slopes are equal.
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