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**Golden Ratio Series: Leo Fibonacci**

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The Golden Ratio is an expression of classical Greek ideas of beauty and proportion. In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities.

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The algebraic equaltion is A+B is to A as A is to B. Most people recognize this proportion when the Fibonacci sequence is mentioned. The Golden Ratio is interestingly the basis for all of Nature – ratio of petals in a flower, leaves on a

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stem, un uncurling fern, the proportion of a tree to it’s roots…… even the proportion of a human being’s height to arm span! It’s a most amazing thing. My science and architectural background leads me to fascination with this principle.

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The most basic expression of the Golden Ratio, this piece is named for the Italian mathematician considered to be the most talented Western mathematician of the Middle Ages, Leonardo Bonacci (1170-1250), also known as Leonardo of Pisa, Leonardo Pisano Bigollo or Leonardo Fibonacci. (XX” x XX” , $225)

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