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 - Concept and Vocabulary Check - Page 646: 4



Work Step by Step

The area, A, of a triangle with height h and base b is given by the formula $\frac{1}{2}$bh. The area of a parallelogram is used to obtain a formula for the area of a triangle. The area of the parallelogram is A= bh. The diagonal in the parallelogram divides it into two triangles with the same size and shape. This means that the area of each triangle is one-half that of the parallelogram.
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