SOLUTION: A triangle has side lengths of 5, 9 and 12. Is it right acute or obtuse?

 

Hi, 

A triangle has side lengths of ,  and . 

Is it right acute or obtuse?

Doing the Squares Testing:   |||Obtuse Triangle

***If is true, then we have a right triangle

***If  is the case, then we have an acute triangle. 

***If , then we have an obtuse triangle.