Did you know?
- Pi is the ratio of a circle's circumference and it's diameter.
- Pi is irrational — it can't be written as a fraction!
- The symbol for pi, π, has only been around for 250 years.
- The Great Pyramid at Giza approximates pi. Its height has the same relationship to the perimeter of its base as the radius of a circle has to its circumference.
- Albert Einstein was born on Pi Day, 3/14/1879, in Wurttemberg, Germany!