How to solve 45 45 90 triangle given hypotenuse?

From the Special Triangle Theorem, the hypotenuse is equal to the side lengtht times the Sqrt (2).

So hypotenuse H = xSqrt (2), x=H/Sqrt (2).

Using numbers, if H = 7, then x = 7/Sqrt (2) = 7Sqrt (2) / 2 to rationalize it.