Question

Which of the triangles w/ the given side lengths is NOT a right triangle?

Answer 1

I believe I helped someone with this problem earlier. Isn't there a table of given side lengths? To determine if a triangle is a right triangle, use
\[a^2+b^2=c^2\]
where a and b are the lengths of two shorter sides and c is the length of the hypotenuse.

If the formula doesn't work, then the triangle isn't a right triangle.