See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Today is Pi Day, an annual celebration of the famous mathematical ...

Celebrate National Pi Day with an exciting and educational scavenger hunt focused on circles and the mathematical constant pi! This engaging activity is designed for high school geometry students to ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...