Question

The lengths of the sides of a triangle are 9​, 12​, and 15. Classify the triangle as​ acute, right, or obtuse.

Answer 1

right angle triangle

Explanation:

by applying Pythagoras theorem

`RHS ={9}^(2) + 12 ^(2) = 81 + 144 = 225=√225 =15=LHS`

hence proved