Given a square sheet of paper with side $1$. Measure on this sheet a distance of $ 5/6$. (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).
Problem
Source: 2010 Oral Moscow Geometry Olympiad grades 8-9 p2
Tags: geometry, paper, folding, square, distance