Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - 10.4 Area and Circumference - Exercise Set 10.4 - Page 649: 55

Answer

trapezoid. So, the formula of area of a trapezoid is formed by the formula of the area of triangle.
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