Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.6 Apply the Law of Cosines - 13.6 Exercises - Skill Practice - Page 892: 1

Answer

Semi-perimeter

Work Step by Step

This is called the semi-perimeter because it is equal to the perimeter divided by two.
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