March 14 is also known as National Pi Day—a celebration of the mathematical constant π (pi). For many, it has become a day to enjoy discounts on pizza, pies and other circular foods. Restaurants and ...

Pi Day is celebrated annually on March 14 to honor the mathematical constant, Pi (3.14). Restaurants like Blaze Pizza, 7-Eleven, and Marco's Pizza are offering pizzas for $3.14 with certain conditions ...

Looking for a slice of hapPIness? Celebrate Pi Day this weekend! Each year, Americans celebrate the Greek symbol of Pi on March 14 because the date matches the first three numbers, 3.14. The annual ...