Although it isn't an official day on the calendar, Pi Day is one of the most anticipated holidays of the year. Sure, it might not come with copious amounts of presents or some mystical lore ...

Pi Day is an annual national celebration of the mathematical concept, which is the ratio of a circle's circumference to its diameter and equals 3.14... March 14 is also reportedly the birthday of ...

Even people who aren’t great at math understand Pi Day. Pi is what mathematicians call the ratio of a circle’s circumference to its diameter. It is an irrational number that goes on forever after its ...

Add Yahoo as a preferred source to see more of our stories on Google. Beyond the fact that March 14 works out to 3.14, the mathematical equivalent of pi (π), pizza restaurants big and small celebrate ...