Pi Day is an annual celebration that takes place on March 14th (3/14) to honor the mathematical constant pi (π), which is the ratio of a circle's circumference to its diameter. Pi is an irrational number, meaning its decimal representation never ends and never repeats. Pi Day is often celebrated by eating pie, reciting digits of pi, and participating in math-related activities. The holiday was officially recognized by the United States House of Representatives in 2009, and it has since become po

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