locus of R, PQR equilateral, P inside square ABCD, Q on sides
Source: 1966-67 Germany R4 12.1 https://artofproblemsolving.com/community/c3208025_
October 13, 2024
geometryLocusEquilateralsquare
Problem Statement
In a plane, a square and a point located inside it are given. Let a point pass through all sides of the square. Describe the set of all those points in for which the triangle is equilateral.