Missing lengths of a 45^°-45^°-90^° Special Right Triangle given Leg length = √13

Leg lengths of a 45^°-45^°-90^° Special Right Triangle are equal
Hypotenuse length = Leg length * √2
Hypotenuse length = √13 * √2
Hypotenuse length = √26
The largest perfect square factor of 26 = 1, therefore √26 is in simplest form
Hypotenuse length = √26 = 5.099019513593