In philosophy (especially that of Aristotle), the golden mean is the felicitous middle between two extremes, one of excess and the other of deficiency; for this meaning, see golden mean (philosophy).
Golden mean is also sometimes used as a synonym for the golden ratio (also called golden section, golden number, or divine proportion), the irrational number approximately 1.61803..., which is: the smaller is to the larger as the larger is to the sum of the two. This ratio has applications in several fields including mathematics, aesthetics (especially art, architecture, and design), and science.
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Whoever cultivates the goldenmean, avoids both the poverty of a hovel and the envy of a palace.
The Golden Spiral structure represents two well known sacred geometry shapes: the goldenmean (phi) spiral and the Fibonacci spiral.
The other method of determining the Golden Section is by dividing a line segment, AB, at a point C, in such a way that the whole line is longer than the first part in the same proportion as the first part being longer than the remainder.