National Pi Day Celebrated with Deals, History, and Fun Facts

March 14 marks National Pi Day, blending mathematics, history, and sweet deals on pies and pizzas across the U.S.

National Pi Day celebrates the mathematical constant π (pi), representing the ratio of a circle's circumference to its diameter.
The day also honors the history of π, dating back to the Babylonians and Greek mathematician Archimedes.
In 1988, physicist Larry Shaw initiated Pi Day at San Francisco's Exploratorium to make math more fun.
The U.S. House of Representatives recognized March 14 as National Pi Day in 2009, with deals on pies and pizzas becoming a tradition.
Famous scientists born on March 14 include Albert Einstein, enhancing the day's significance.