Happy Pi Day, the annual celebration of this incredible, mysterious, and irrational mathematical constant. Okay, so Pi — most commonly written as the Greek symbol ...

Add Yahoo as a preferred source to see more of our stories on Google. Calling all mathematicians, a day where math and food meet is finally here! March 14, National Pi Day, honors 3.14 (π) the ratio ...

One of my favorite holidays is Pi Day. On March 14, people who love the math constant called pi celebrate by eating the other kind of pie. Like apple pie, pumpkin pie and even pizza pie. I talked ...

Pi Day — March 14 in the United States — was first celebrated in 1988 and falls during Women's History Month. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Image made with elements from Canva. It’s March 14, or Pi Day, that day of the year where we celebrate the ratio that makes a circle a circle. The Greek letter that represents it is such a part of our ...

SAN FRANCISCO -- Every March 14, mathematicians, scientists and math lovers around the world celebrate Pi Day, a commemoration of the mathematical sign Pi. That's because the date written numerically ...

Imagine a cup of tea. Wrap a piece of string around the circumference of the cup, and measure the length of the string. Then, lay your spoon on top of the cup, making sure it lies across the center of ...

WASHINGTON (AP) — Saturday is the day when love of math and a hankering for pastry come full circle. Saturday is Pi Day, a once-in-a-year calendar date that this time squares the fun with a ...

Editor's note: A version of this story was published in March 2011. Get ready to roll out some dough, because it's Pi Day. What's that, you ask? Think back to geometry class. Pi represents the ratio ...