Anyone want some Pi?

Today is Pi Day!  For all you non-math wizards out there, the Greek letter π (pi) represents a mathematical constant that has been calculated to over one trillion digits beyond its decimal point.  And it starts with 3.14 (or March 14th).  Instead of hurting our brains trying to figure out what pi actually measures (it’s the ratio of the circumference of a circle to its diameter), here are a few geeky pi designs we think are pretty cool.

Find all these nerdy pi t-shirts here.  And don’t forget to keep calm and pi on!  Happy Pi Day!

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