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TES: The largest network of teachers in the world

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TES: The largest network of teachers in the world

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—Mario Livio,

The Golden Ratio: The Story of Phi, The World's Most Astonishing NumberThe golden ratio is an irrational number, approximately 1.6180339887. Mathematician Mark Barr proposed using the first letter in the name of Greek sculptor Phidias,

phi, to symbolize the golden ratio. The Golden Ration is often reffered to as Phi.This ratio can been seen throughout nature and in acient greek design.