article_snippet: Students from the Maurice J. Tobin School makes a human Pi symbol at the Maurice J. Tobin School during a celebration of Pi Day in 2007 .
article_snippet: Pi is the constant used to calculate the area of a circle, as in pi times the radius squared, but it appears all over other parts of mathematics.
article_snippet: In some places, Pi Day is celebrated with the edible type of pie.
article_snippet: eat your numbers: To celebrate Pi Day (the math constant and March 14 or 3-14), Wanda's Pie in the Sky, owned by Wanda Beaver made these pies in 2011 . '
article_snippet: One interesting aspect of pi is that it is irrational, which means the decimals after 3 go on to infinity with no repeating patterns.
article_snippet: A pi-adorned Dominic Vitale watches a performance at Hanover High School during the 2011 celebration of Pi day .
article_snippet: : Hanover High School students participate in Pi Day activities in 2012 and made this tasty and dorktastic creation .
article_snippet: To celebrate Pi day (the math constant and March 14 or 3-14), Wanda's Pie in the Sky also made this baked good several years ago . '
article_snippet: All over the world: British writer, essayist and autistic savant Daniel Tammet poses on March 14, 2013, at the Palais de la Decouverte, a science museum in Paris, as part of the first Pi Day in France .