Golden ratio

Golden ratio line

Golden section of AB segment; AS is the golden segment of AB (and thus SB, of AS)

Construction of segment from its given golden segment

Finding the golden section S of a segment AB

Construction of segment AB from its given golden segment AS

Golden rectangles

Golden and silver triangles

Regular pentagram

A pentagram with golden ratios

A pentagram image illustrating the golden ratios hidden in it

Golden spiral in rectangles

Golden spiral in triangles

Approximate and true Golden Spirals.

Golden angle Ψ de 137,5°

Phi digits

Leonardo da Vinci's Vitruvian Man

Leonardo da Vinci's Vitruvian Man