What is a true statement about an isosceles right triangle?

a. the hypotenuse is square root of 3 times as long as either leg.
b. each leg is square root of 3 times as long as the hypotenuse.
c. each leg is square root of 2 times as long as the hypotenuse.
d. the hypotenuse is square root of 2 times as long as either leg.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.