We're excited to celebrate this year's Pi Day with two new souvenirs from Groundspeak! The first souvenir is inspired by the groups of people creating Pi Day Event Caches. Just attend an event, including CITO or a Mega-Event on Pi Day and you'll earn this souvenir.
The second souvenir celebrates the mystery of Pi. To earn it, log a "Found It" on a Mystery Cache on March 14.
1.
the 16th letter of the Greek alphabet (II, π).
2.
the consonant sound represented by this letter.
3.
Mathematics.
- the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter.
- the ratio itself: 3.141592+.