Saturday 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 ...

March 14 (UPI) --Saturday's Google Doodle celebrates everyone's favorite math holiday, Pi Day. The Doodle features an animated illustration of how the mathematical constant is used in equations ...

Oregonians looking for an excuse to enjoy a slice of pie will have one on March 14, also known as National Pi Day. Every year, Pi Day — not to be confused with National Pie Day, which occurs on Jan.

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. The latest event is Pi Day, ...

Restaurants, convenience chains and delivery apps across the country are marking National Pi Day on March 14 with discounts on pizzas, dessert pies and other circular foods. From 7-Eleven to Sheetz, ...

Pi is an irrational number — it cannot be expressed as a fraction. But our love for its homophone, pie? Completely rational. Whether sweet or savory, fruity or custardy, our affection for this ...