paperfolding a square paper of side 1 to measure a distance 5/6
Source: 2010 Oral Moscow Geometry Olympiad grades 8-9 p2
August 16, 2020
geometrypaperfoldingsquaredistance
Problem Statement
Given a square sheet of paper with side . Measure on this sheet a distance of . (The sheet can be folded, including, along any segment with ends at the edges of the paper and unbend back, after unfolding, a trace of the fold line remains on the paper).