Answer:
x = 9
Step-by-step explanation:
This is a special right triangle ( 45 - 45 - 90 )
In a 45 - 45 - 90 degree triangle the hypotenuse is equal to the measure of the leg times √2 and the measure of the leg is equal to the hypotenuse divided by √2
The given measure of the hypotenuse is 9√2 and x is a leg
Thus x = [tex]\frac{9\sqrt{2} }{\sqrt{2} }[/tex] = 9
