In honor of National Pi Day, here are nine amazing pie charts

By Elizabeth Landau, CNN In Daniel Tammet's mind, three is a dotted green crescent moon shape, one is a sort of white sunburst and four is a blue boomerang. Every number has a distinct color and shape, making theDo you know what today is? The mathematically inclined among you will instantly proclaim that it is, in fact, Pi Day. This impromptu holiday happens every year on 3/14 (like 3.14 at the beginning of pi). Of course this onlyDo you know what today is? The mathematically inclined among you will instantly proclaim that it is, in fact, Pi Day. This impromptu holiday happens every year on 3/14 (like 3.14 at the beginning of pi). Of course this onlyOlivia Wilde told Justin Bieber to put his shirt on, Deion Sanders wins his custody battle, Greg Jennings visits with the Vikings.Pi Day and/or Einstein's birthday will be celebrated here – http://turntable.fm/daily_theme_room

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