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Fibonacci Numbers and the Golden Section
A fascinating site with mathematical and geometrical facts as well as formulas, history, and diagrams. Find explanations of Fibonacci numbers, methods for constructing golden sections in two or three dimensions, and information about the golden section (or mean or rectangle) in architecture, art, and music.
http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fib.html

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