Today marks National Pi Day in the United States and around the world. The holiday commemorates a timeless symbol beloved by many in mathematical and scientific communities, while making the most of ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = ...

JACKSONVILLE, Fla. – Tuesday is March 14, also known as National Pi Day. The celebration is based on the first three digits of pi, 3.14. So what exactly is pi, often symbolized as the Greek letter π?

Pi Day (March 14) is a day of global mathematical celebration, but it’s not the only numerically significant calendar date. It’s far from the rarest, either. In fact, today marks a special occasion ...