Question 79712
Use the Pythagorean theorem to see if this is true.
{{{c^2 = a^2+b^2}}} 
The longest side is c = 8.
The two legs are a = 4 and {{{b = 4sqrt(3)}}} Making the appropriate substitutions, we get:
{{{8^2 = 4^2+(4sqrt(3))^2}}} Evaluating this:
{{{64 = 16+16(3)}}}
{{{64 = 16+48}}}
{{{64 = 64}}} The triangle is a right triangle.