Mathematics _-‾ Design
The Golden Ratio: φ =1.618
The golden ratio is from Antient Greek Mathematics. It was also used during the Antient Greeks time period to construct architecture. The facades and floor plan of the Parthenon uses this mathematic equation.
Le Corbusier also used the formula to design the modern International Style with his peice Modulor.
Le Corbusier's Villa Stien also uses the golden ratio or rectangle in the floor plan and elevations
Many single family homes by Mario Botta also display the ratio in his designs.
All information was taken from Wikipedia.