## Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole

# Chapter 5 - Test - Page 264: 8b

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#### Work Step by Step

Using Pythagorean's Theorem... $a^{2}+b^{2}=c^{2}$ Substitute in known lengths... $11^{2}+8^{2}=15^{2}$ Simplify... $121+64=225$ $185\ne225$ Since the leg lengths (squared) do not equal the hypotenuse (squared) then the triangle is not a right triangle.

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