Question 554074
Suppose the sides are {{{a}}},{{{b}}}, and {{{c}}}
and suppose {{{c}}} is the longest side. Then, if
this is a right triangle, it will always be true
that {{{ a^2 + b^2 = c^2 }}}
This is true in the case where
{{{ a = 3 }}}
{{{ b = 4 }}}
{{{ c = 5 }}}
{{{ 3^2 + 4^2  = 5^2 }}}
{{{ 9 + 16 = 25 }}}
{{{ 25 = 25 }}}
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Likewise, if  {{{ a^2 + b^2 = c^2 }}} is NOT
true, then it's not a right triangle.