Golden ratio

Phi is Golden:
  • Represented by the greek letter phi(φ),  the golden ration is the irrational value i.e.,
Golden Ratio:
  • Euclid gives us the definition of the Golden Ratio.
  • He instructs us to take a line segment and divide it into two smaller segments such that the ratio of the whole line segment (a+b) to segment a is the same as the ratio of segment a to segment b.
         or equivalently as a proportion:
The Golden Rectangle:
  • The Golden Ratio is most commonly represented as the Golden  Rectangle, a rectangle with side-length ratio of 1.618:1.
  • Golden Rectangle also have the property that if you cut off a square, you will be let with another Golden Rectangle.
Golden Rectangles
Solving the Golden Proportion:
  • To find where the value 1.618034..... comes from we must solve the proportion.

  • Visually, we can see how the Fibonacci sequence generates rectangles closer and closer to the Golden Rectangle.

Examples:
Golden Ratio in Web page
Golden Ratio in Logos
Golden Ratio in Arts