A special number: Phi

Among all rectangles, there is one which is more beautiful for the people. It´s an special rectangle. If you divide the longest side by the shortest side you obtain 1,6180339... and if you cut a square whose side is equal to the small side of the rectangle we obtain a rectangle similar to the original. This rectangle is used by designers, engineers, painters... to do a lot of things: credit cards snuff packages, buildings, pictures, etc.

Examples:

THE VENUS OF MILO

Venus´s navel divides the segment of the total height as the golden ratio.

SNUFF PACKAGES / CREDIT CARDS

Snuff packages has got the golden proportion and credit cards, too.

DURERO´S SPIRAL

It´s a spiral embedded in golden rectangles.

NOTRE-DAME

The façade of the Notre-Dame has got the golden proportion, because number Phi is related to the divinity.