Monday was 3/14, or Pi Day, a celebration of the constant ratio between the circumference and diameter of a circle that’s approximately 3.14. Some use the annual observance as an excuse to celebrate a ...

It’s deliciously reliable, like cherry pie: Divide the circumference of any circle in the universe by its diameter, and you will always get the same number, pi, aka the Greek letter π. In fact, NASA ...

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 ...

Editor's Note: To honor math and all who use it, UDaily is re-posting a Pi Day story from 2018. March 14 is Pi Day. You’re welcome to eat pie, too, but the day is more of a celebration of math. A ...

March 14 — a day you’re more likely than most others to eat — or throw — a pie and get a reduced price on your pizza. It’s all in celebration of pi (Greek letter π), the mathematical constant and ...

Megyn Kelly TODAY profiles Terry Austen, a geometry teacher at St. Patrick High School in Portland, Michigan, whose approach to teaching pi – the ratio of a circle’s circumference to its diameter – is ...

If you're not properly appreciative of pi, NASA is here to help. Pi is the ratio of a circle's circumference to its diameter, a mathematical constant that rounds off to 3.14. The actual number goes on ...