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Fibonacci was an italian mathematician born in Pisa in 1170, considered to be ‘the most talented western mathematician of the Middle Ages’

FIBONACCI SEQUENCE:

Fn= F(n-1) + F(n-2)
1,1,2,3,5,8,13,21,34,55,89,……

The Fibonacci rectangles converge to the Golden Rectangle (with golden ratio sides)
21/13= 1.61538
89/55= 1,61818
……..
Golden Ratio= 1,618033

Graphical representation

Some examples

Some examples