What is a Right angled triangle?
Right angled triangle : Right angled triangle is a triangle in which one angle is a right angle (that is, a 90-degree angle). # The relation between the sides and angles of the right angled is the basis for trigonometry. # Pythagoras Theorem states that The square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of other two sides.