MathDB
cut diagonal of 2x2 in 6 equal parts, ruler (2020 Novosibirsk Oral Geo Oly 9.1)

Source:

May 24, 2021
geometryRulerconstructionsquare

Problem Statement

A 2×22 \times 2 square was cut out of a sheet of grid paper. Using only a ruler without divisions and without going beyond the square, divide the diagonal of the square into 66 equal parts.