Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - 3-2 Solving Inequalities Using Addition or Subtraction - Practice and Problem-Solving Exercises - Page 176: 74


a. acute b. right c. obtuse

Work Step by Step

a. 4$^{2}$+5$^{2}$___ 6$^{2}$ 16+25____ 36 41$\gt$36, this inequality proves that it is an acute triangle. b. 3$^{2}$+4$^{2}$___ 5$^{2}$ 9+16____ 25 25=25, this equality proves that it is a right triangle. c.10$^{2}$+15$^{2}$___ 20$^{2}$ 100+225____ 400 325$\lt$400, this inequality proves that it is an obtuse triangle.
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