Pi Day – 14th March
Today is Pi day (often represented by the lower-case Greek letter π), one of the most well-known mathematical constants, is the ratio of a circle’s circumference to its diameter. For any circle, the distance around the edge is a little more than three times the distance across.
“Probably no symbol in mathematics has evoked as much mystery, romanticism, misconception and human interest as the number pi. ~William L. Schaaf, Nature and History of Pi