Math lovers celebrate today (3/14) as Pi Day, in honor of the irrational number pi. Pi, or π, is defined as the ratio of the circumference of a circle to its diameter. Pi is an irrational number, ...

Friday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its diameter and equals 3.14... Schools and museums often plan events to ...

On March 14, the nerdier side of humanity celebrates Pi Day, a holiday that “commemorates the irrational, transcendent, and never-ending ratio that helps describe circles of all sizes.” Pi is the ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of the mathematical symbol pi etched into a piece of pi on a green background. Math nerds everywhere are digging ...

KUSA – If you're a math nerd, March 14 is a pretty magical day. And this year, 03/14/15 is especially awesome. And while some use Pi Day as an excuse to eat pie (the food)/make puns, others use Pi Day ...

TAMPA, Fla. -- It’s Pi Day, so we went to Mike's Pies in Tampa to celebrate. While it's fun to eat pie on Pi Day, today is really all about numbers. Pi is the ratio of the circumference of a circle to ...

Pi Day Today: At the Exploratorium, Pi Day celebrations traditionally include a pie feast, featuring fruit pies and tea. A ritual known as the pi procession is also held.