Question

Given the lengths of the sides of a triangle, identify the triangle as acute, right, or obtuse.
37,12,34
5,12,13
20,21,28

Answer 1

given the three sides, with c being the largest, you know that the triangle is a right triangle if

c^2 = a^2+b^2

if c^2 < a^2+b^2, then it's acute, and obtuse otherwise.

So, start checking.

Answer 2

Thank you Steve.