1. The Golden section in Art and Architecture

2. The Golden Rectangle a b a/b = (a+b)/a This fraction, (a+b)/a, is called the golden ratio. a b a b A golden rectangle, based on Fibonacci series, is one whose side lengths are in the golden ratio.

3. The Great Pyramid of Giza It is one of the oldest structures on the face of the Earth and was built around 2560 BC . This Egyptian pyramid is remarkably close to a "golden pyramid"

5. The study of perspective mean became an obsession for him.

6. He constantly tried to explain what he saw and devised many experiments to test his ideas.

8. The golden ratio has been coined golden because it is said to be aesthetically pleasing.

10. Vitruvian Man The Vitruvian Man (or Man in Action) is the drawing of a man inscribed in a circle. The height of the man is in golden proportion from the top of his head to his navel and from his navel to the bottom of his feet. The Vitruvian Man illustrates all of the divine proportions within the human being.