A 45-45-90 triangle has a hypotenuse of length 7. What is the length of one of its legs?

##(72)/2##
It is a 45-45-90 triangle
It is a isosceles Rt
two catheti are equal to each other.
Pythagoras theorem
cathetus + cathetus = hypotenuse
2 cathetus = hypotenuse
hypotenuse = 7
2 cathetus = 7
2 cathetus = 49
cathetus = ##49/2##
cathetus0
cathetus = ##49/2##
cathetus = ##(72)/2##
The length of one of its any legs is ##(72)/2##