MathDB

11

Part of 1974 IMO Longlists

Problems(1)

Construct an equilateral triangle [ILL 1974]

Source:

1/2/2011
Given a line pp and a triangle Δ\Delta in the plane, construct an equilateral triangle one of whose vertices lies on the line pp, while the other two halve the perimeter of Δ.\Delta.
geometryperimetergeometry proposed