Ultra-accurate application for calculating the sides of the cathetes and hypotenuse of a triangle with two interior angles of 45, 45 and one right angle of 90 degrees. A triangle of this type is both right-angled and isosceles. A 45 45 90 triangle is a square divided by two opposite angles on the diagonal. Calculates the lengths of the two unknown sides of the cathetus and hypotenuse, as well as the area and perimeter of the special triangle. The supercalculator uses the right triangle formula a