Pi Day: five fun facts about 3.14

March 14, or 3.14, is Pi Day. Get it? Pi Day celebrates all things related to the ever-important mathematical constant that measures the ratio of a circle's circumference to its diameter. Throughout history, much has been done to understand more about this unconventional number; determining its value definitely tops the list. And while we can't tell you what pi is worth, we think there are a few things you should know about π. Here are five.

By , Contributor

1. It goes on forever

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    A coconut cream pie is shown in this February 2012 photo. March 14 is Pi Day.
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We all know that π is typically rounded to 3.14, as figures with many numbers beyond the decimal point usually are. But did you know those post-decimal numbers continue infinitely? Pi is an irrational number, which means it cannot be represented as a simple fraction, and those numbers cannot be represented as terminating or repeating decimals. Therefore, the digits of pi go on forever in a seemingly random sequence. Pi is also a transcendental number, which means no amount of mathematics could possibly determine its value. 

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