Legs: The legs of a right triangle are the two shorter sides that form the right angle.
Pythagorean Theorem: This theorem relates to right triangles and states that in any right triangle, the square of the length of the hypotenuse is equal to the sum of squares of the lengths of its legs.
Trigonometry: Trigonometry is a branch of mathematics that deals with relationships between angles and sides in triangles, including calculations involving hypotenuses.