inradius r=1/2 (a + b - c) in right triangle (2016 Izumrud Olympiad 8-9 p5)
Source:
May 4, 2021
geometryinradiusright triangle
Problem Statement
Prove that if and are legs, is the hypotenuse of a right triangle, then the radius of a circle inscribed in this triangle can be found by the formula .