The Golden Section Ratio: Phi
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http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/phi.html  


Ron Knott  
Contents: What is the Golden Ratio (or Phi)?  A simple definition of Phi, A bit of history; Phi to 2000 decimal places; Phi and the Fibonacci numbers  Another definition of Phi, A formula for Phi using a continued fraction, Rational Approximations to Phi, Why do the Fibonacci numbers occur in the convergents?; Other ways to find Phi using your calculator.  


Levels:  High School (912), College 
Languages:  English 
Math Topics:  Golden Ratio/Fibonacci, History and Biography, Number Theory, Fibonacci Sequence 
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