March 14th (3/14) is International Pi Day! The Greek letter Pi (π) is a math symbol to represent a constant - the ratio of the circumference of a circle to the diameter. Pi (Greek letter “π”) is the symbol used in math to represent a constant — the ratio of the circumference of a circle to its diameter. And that is about 3.14159. Clear as mud??? It doesn't matter - Pi Day is an excuse to eat yummy pie!
