Question 618352
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Hi, 
A triangle has side lengths of {{{A = 5}}}, {{{B= 9}}} and {{{C= 12}}}. 
Is it right acute or obtuse?
Doing the <u>Squares Testing:</u> {{{25 + 81 < 144 }}}  |||Obtuse Triangle
***If {{{A^2+B^2 = C^2 }}}is true, then we have a right triangle
***If {{{A^2+B^2 > C^2}}} is the case, then we have an acute triangle. 
***If {{{A^2+B^2 < C^2}}}, then we have an obtuse triangle.