inradius of rightangled, compass (2009 All-Ukrainian Correspondence MO 5-12 p3)
Source:
April 28, 2021
geometrycompassinradiusright triangleUkraine Correspondence
Problem Statement
A right triangle is drawn on the plane. How to use only a compass to mark two points, such that the distance between them is equal to the diameter of the circle inscribed in this triangle?