Question

the lengths of the sides of a triangle are given. classify each as either an acute, obtuse or right triangle. the lengths are 7, 8, 9

Answer 1

Hint:

\[\text{If} \space a^2 + b^2 > c^2, \space \text{then the triangle is acute}\]
\[\text{If} \space a^2 + b^2 < c^2, \space \text{then the triangle is obtuse}\]