Answer:
This is not a right triangle
Step-by-step explanation:
To determine if these lengths are a right triangle we can use the Pythagorean Theorem
a^2 + b^2 = c^2
so
5^2 +8^2 = 9^2
25+64=81
25+64 is not 81, it is 89
Therefore, this triangle is not a right triangle
