Pi Day is an international holiday that is celebrated by the entire world on March The reason Pi Day is celebrated on March is that the first 3 numbers form number which can easily be changed to or March Pi is an irrational number.

Includes pi formulas and equations.

Pi formula Meet William Jones, the guy who invented Pi;

‘Irma’ is a stunning half circle shawl using which is shaped by using Elizabeth Zimmerman’s Pi formula and finished with a knitted-on lace edging.

Yes, Pi Day is again upon us. And not just any Pi Day. They’re calling this the Pi Day of the century: Pi to five digits.

Irma Knitting pattern by Anniken Allis

PI Plaza by Barbara Grygutis (aluminum, LED lighting system) located outside the front entrance of Henry Abbott Technical High School, Danbury, Connecticut. One of my favorite irrational numbers