Successive Golden Rectangles dividing a Golden Rectangle into squares (Giza Pyramids).

The Golden Rectangle and the Giza Pyramids

A golden rectangle is a rectangle whose side lengths are in the golden ratio, one-to-phi, that is, approximately 1:1.618. A distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle, that is, with the same proportions as the first. Square removal can be repeated infinitely, which leads to an approximation of the golden or Fibonacci spiral.

Fibonacci numbers (0,1,1,2,3,5,8,13,21,34...) are a sequence of numbers named after Leonardo of Pisa, known as Fibonacci. The first number of the sequence is 0, the second number is 1, and each subsequent number is equal to the sum of the previous two numbers of the sequence itself.

The Giza Pyramids: The Giza Necropolis stands on the Giza Plateau, on the outskirts of Cairo, Egypt. This complex of ancient monuments is located some 8 km (5 mi) inland into the desert from the old town of Giza on the Nile, some 25 km (15 mi) southwest of Cairo city centre. Great Pyramid of Giza is the only remaining monument of the Seven Wonders of the Ancient World.