The Golden Ratio Phi, represented with the Greek letter φ in honor the Greek sculptor Fidias, is a mathematical concept that makes reference to a peculiar proportion between straight line segments that can be observed in the nature (flowers, leaves, branches, roots, molluscs, starfishes, structures of chorale, rock crystals, snowflakes, ideal proportion between the parts of the human body, etc…) and in certain geometric figures (triangle, circle, squaring, rectangle, star, ellipse, rhombus…
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