2. Use Pythagoras' Theorem to find the exact value of sides f and g (remember what type of triangle this is?).
[math]f^2+g^2=1^2[/math][br]Since it is an isosceles triangle, [math]f=g[/math].[br][math]f^2+f^2=1[/math][br][math]2f^2=1[/math][br][math]f^2=\frac{1}{2}[/math][br][math]f=\frac{\sqrt{2}}{2}[/math] , [math]g=\frac{\sqrt{2}}{2}[/math]