Question 695287
{{{ 4^2 + 6^2 }}} ≠ {{{10^2}}}, therefore NOT a right triangle
{{{ 9^2 + 12^2 }}} = {{{15^2}}}, therefore it is a right triangle
{{{ 8^2 + 5^2 }}} = {{{sqrt(89)^2}}}, therefore it is a right triangle