You Can't Prove They Don't Exist

7/17/2010

Pi Approximation Day Card

http://www.treelobsters.com/2010/07/pi-approximation-day-card.html
Pi Approximation Day is nearly here. Don't forget to give a card to the math geek in your life. And, let's face it, this is probably the only actual Pi Approximation Day greeting card available. Download the PDF file, print and fold.





 


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