Manfred Pietsch, The golden ratio and regular polygons,
Forum Geometricorum, 17 (2017) 17--19.

Abstract. We give a simple construction of a chord of the circumcircle of an isosceles triangle whose intersections with the legs of the triangles divide symmetrically the chord in the golden ratio.

[ps file] [pdf]

Return to Forum Geom., 17 (2017) Table of Contents