03/14/2011 04:31 pm ET Updated May 25, 2011

Pi Day: What's Your Favorite Type Of Pie? (PHOTOS)

March 14 (3/14), also known as Pi Day, is the perfect day to indulge in your favorite pie. To get your mouths watering, HuffPost Food has rounded up some of the best pies known to mankind.

But first a bit of history: Pi Day's origins can be traced back to 1989 in San Francisco. The day celebrates the mathematical constant Pi (π), which begins with the digits 3.14. You can learn more about Pi Day and watch videos about it here.

Pie and Pi Day have long been associated. After all, pi is the ratio of a circle's circumference to its diameter and pies are circular. Some take the association more seriously than others; that includes annual pie-eating and pie-baking contests.

The holiday Pi Day has been officially recognized by the U.S. government since 2009 and some companies have special deals today in honor of it, according to SlashFood. If you want to make your own pie for Pi Day, here's a handy list of recipes.

What's your favorite pie of all time? Check out our gallery below and rank the types of pies we rounded up. Let us know if we missed your go-to pie!

Pi Day Pies (PHOTOS)