Question 150641
The lengths of the sides of the right triangle with 45degree angles and a hypotenuse of 6 is
{{{36 = a^2 + a^2}}} Both sides are the same length
{{{36 = 2a^2}}}
{{{18 = a^2}}}
{{{3sqrt(2) = a}}}
So the perimeter is {{{6 + 3*sqrt(2) + 3*sqrt(2)}}}
Answer D


2) Any triangle with sides in the ratio of 3:4:5 is a right triangle.
So 12:16:20 is a right triangle. A right triangle is not obtuse.
Answer C