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.
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 10 - Section 10.2 - Graphs of Linear Equations and Slope - Exercises - Page 459: 41
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