Answer
Obtuse
Work Step by Step
9$^2$+15$^2$=18$^2$
306$\lt$324
If a$^2$+b$^2$$\lt$c$^2$ then it is obtuse.
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 5 - Review Exercises - Page 275: 42c
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