Golden ratio

:This article is about the mathematical ratio. For the Aristotelian concept of "golden mean" see Nicomachean Ethics.

External links

Mathematics

• {{MathWorld|title=Golden Ratio|urlname=GoldenRatio}}
• The Golden Number
• The Golden Section: Phi (homepage created by Dr Ron Knott)
• PHI, the golden ratio
• Phi to 20,000 places
• {{H2g2|2346374|phi}}
• PHI: The Divine Ratio
• Stephen Marquardt's Beauty Mask based on Golden Ratio

History