[w00t]

Code:

sta = leg1 * leg1 + leg2 * leg2 answ = math.sqrt(sta) print(answ, "is the length of the hypotenuse.");

Bad.

Code:

ans = math.sqrt(leg1**2 + leg2**2) print( str(ans) + " is the length of the hypotenuse.");

Good.

Don't create unnecessary variables.
Use operators that make it easy to understand what it is you are doing( in my code, it is immediately clear that I am getting the square root of the sum of leg1 squared and leg2 squared )