This math topic focuses on using the Pythagorean Theorem to identify whether a given side of a right triangle is a leg or the hypotenuse. It introduces learners to the basic concepts of triangle side identification, which is an essential part of understanding and applying the Pythagorean Theorem. Each question presents a different triangle and asks the learner to determine the classification of a specific side as either a leg or the hypotenuse. The topic is designed as an introductory level and is suitable for beginning learners of Pythagoras' Theorem.