Because triangle XYZ is a right triangle, the side lengths must satisfy the Pythagorean theorem, [tex]a^2 + b^2 = c^2[/tex]. In this isosceles triangle, it becomes [tex]a^2 + a^2 = c^2[/tex]. By combining like terms, [tex]2a^2 = c^2[/tex].
Which final step will prove that the length of the hypotenuse, [tex]c[/tex], is [tex]\sqrt{2}[/tex] times the length of each leg?
A. Substitute values for [tex]a[/tex] and [tex]c[/tex] into the original Pythagorean theorem equation.
B. Divide both sides of the equation by 2, then determine the principal square root of both sides of the equation.
C. Determine the principal square root of both sides of the equation.
D. Divide both sides of the equation by 2.