What is the story behind the golden ratio?

While the proportion known as the Golden Mean has always existed in mathematics and in the physical universe, it is unknown exactly when it was first discovered and applied by mankind. read more

Euclid explains a construction for cutting (sectioning) a line "in extreme and mean ratio", i.e., the golden ratio.Throughout the Elements, several propositions (theorems in modern terminology) and their proofs employ the golden ratio. The golden ratio is explored in Luca Pacioli 's book De divina proportione of 1509. read more

The “Golden Ratio” was coined in the 1800’s. It is believed that Martin Ohm (1792–1872) was the first person to use the term “golden” to describe the golden ratio. to use the term. read more