Which of the following statements are true of the hypotenuse of a right triangle?
It is the longest side of a right triangle.
It is one of the legs.
It is opposite the right angle.
Its length is the sum of the lengths of the other two sides.
It forms a right angle with an adjacent side.
The hypotenuse is always the longest side, and it is always opposite the right angle. "Leg" is not a mathematical term. If it is being used to refer to one of the sides forming a right angle, the hypotenuse is not a "leg".