#2**+5 **

Here is one of the best pages on the internet that covers Phi (and it's reciprocal, phi):

http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/phi.html

It's esay to understand and quite fascinating !!!!

CPhill Oct 9, 2014

#1**+5 **

The value of phi is (1 + √5) / 2.

For a more complete explanation, research "golden ratio" or "golden section" on the internet.

geno3141 Oct 9, 2014

#2**+5 **

Best Answer

Here is one of the best pages on the internet that covers Phi (and it's reciprocal, phi):

http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/phi.html

It's esay to understand and quite fascinating !!!!

CPhill Oct 9, 2014