WASHINGTON — Pi Day is recognized every March 14 (3/14) by mathematicians and food fans around the world. After all, it’s the perfect excuse to dig into a pie.
Here are 16 pie recipes to help you celebrate the constant that represents the circumference of a circle to its diameter.
![This May 5, 2014 photo shows mini cherry phyllo pies in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_131941871309-1662x1254.jpg)
AP Photo/Matthew Mead
![This May 12, 2017 photo provided by The Culinary Institute of America by shows a peach crumb pie in Hyde Park, N.Y. This dish is from a recipe by the CIA. (Phil Mansfield/The Culinary Institute of America via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_17199715723300-1674x1254.jpg)
Phil Mansfield/The Culinary Institute of America via AP
![This Sept. 11, 2017 photo shows a skillet apple cranberry pie in New York. This dish is from a recipe by Sara Moulton. (Sara Moulton via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_17257800004492-1880x1236.jpg)
Sara Moulton via AP
![This December 2017 photo shows a shepherd’s pie in New York. This dish is from a recipe by Katie Workman. (Carrie Crowder/Katie Workman via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_18042016652574-1880x1254.jpg)
Carrie Crowder/Katie Workman via AP
![This June 2, 2014 photo shows strawberry streusel pie in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_224598068342-1880x1254.jpg)
AP Photo/Matthew Mead
![HOLD FOR LIFESTYLES For Elizabeth Karmel coconut cream pie is magical, with its homemade flaky crust and rich silky custard. She wanted to keep her grandmothers pie recipe but wanted it to be less work. This image taken in Concord NH, on February 27, 2012 shows the version she came up with. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_120227057854-1880x1254.jpg)
AP Photo/Matthew Mead
![This Oct. 12, 2015 photo shows citrus pumpkin meringue pie in Concord, NH. This Thanksgiving pie is deliciously deceptive, hidden under the meringue is a classic pumpkin pie spiked with just a hint of citrus. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_226160904251-1880x1254.jpg)
AP Photo/Matthew Mead
![This Oct. 6, 2014, photo shows cheddar whiskey apple pie with butter cracker crumble in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_259677699935-1880x1254.jpg)
AP Photo/Matthew Mead
![This March 14, 2011 photo shows a coconut and berry Passover tart in Concord, N.H. This tart sports a coconut crust that is both chewy and crispy, a pudding-like vanilla-almond filling and mounds of fresh fruit. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_110314136257-836x1254.jpg)
AP Photo/Matthew Mead
![This July 21, 2014 photo shows orange-vanilla ice cream pie with orange whipped cream in Concord, N.H. The dish offers the creamy-sweet richness of a Creamsicle. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_332568058520-1880x1254.jpg)
AP Photo/Matthew Mead
![This Oct. 27, 2014 photo shows penuche cream pie in Concord, N.H. It is important to assemble this pie only just before serving; the penuche will soften once the custard layer is added. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_390568224977-1880x1254.jpg)
AP Photo/Matthew Mead
![In this image taken on May 27, 2013, a raspberry coconut ice box pie is shown served on a tray in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_473932956119-1880x1254.jpg)
AP Photo/Matthew Mead
![This Nov. 17, 2014 photo shows coconut pie in Concord, N.H. The coconut is processed with a bit of butter to help bind and brown it. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_796492493829-1880x1254.jpg)
AP Photo/Matthew Mead
![This June 8, 2015 photo shows raspberry rhubarb cream pie with oatmeal crust in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_764874451709-1880x1254.jpg)
AP Photo/Matthew Mead
![This Sept. 21, 2015 photo shows deep dish apple pie in Concord, NH. Apple pie ingredients are few and elemental: apples, of course, along with sugar, flavoring and pie crust. But choosing the right apples is a serious business. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_16300516671223-1880x1254.jpg)
AP Photo/Matthew Mead
![This June 1, 2015 photo shows the making of peach hand pies in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_809783767907-1880x1254.jpg)
AP Photo/Matthew Mead
![This May 5, 2014 photo shows mini cherry phyllo pies in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_131941871309-260x174.jpg)
![This May 12, 2017 photo provided by The Culinary Institute of America by shows a peach crumb pie in Hyde Park, N.Y. This dish is from a recipe by the CIA. (Phil Mansfield/The Culinary Institute of America via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_17199715723300-260x174.jpg)
![This Sept. 11, 2017 photo shows a skillet apple cranberry pie in New York. This dish is from a recipe by Sara Moulton. (Sara Moulton via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_17257800004492-260x174.jpg)
![This December 2017 photo shows a shepherd’s pie in New York. This dish is from a recipe by Katie Workman. (Carrie Crowder/Katie Workman via AP)](https://wtop.com/wp-content/uploads/2017/03/AP_18042016652574-260x174.jpg)
![This June 2, 2014 photo shows strawberry streusel pie in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_224598068342-260x174.jpg)
![HOLD FOR LIFESTYLES For Elizabeth Karmel coconut cream pie is magical, with its homemade flaky crust and rich silky custard. She wanted to keep her grandmothers pie recipe but wanted it to be less work. This image taken in Concord NH, on February 27, 2012 shows the version she came up with. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_120227057854-260x174.jpg)
![This Oct. 12, 2015 photo shows citrus pumpkin meringue pie in Concord, NH. This Thanksgiving pie is deliciously deceptive, hidden under the meringue is a classic pumpkin pie spiked with just a hint of citrus. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_226160904251-260x174.jpg)
![This Oct. 6, 2014, photo shows cheddar whiskey apple pie with butter cracker crumble in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_259677699935-260x174.jpg)
![This March 14, 2011 photo shows a coconut and berry Passover tart in Concord, N.H. This tart sports a coconut crust that is both chewy and crispy, a pudding-like vanilla-almond filling and mounds of fresh fruit. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_110314136257-260x174.jpg)
![This July 21, 2014 photo shows orange-vanilla ice cream pie with orange whipped cream in Concord, N.H. The dish offers the creamy-sweet richness of a Creamsicle. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_332568058520-260x174.jpg)
![This Oct. 27, 2014 photo shows penuche cream pie in Concord, N.H. It is important to assemble this pie only just before serving; the penuche will soften once the custard layer is added. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_390568224977-260x174.jpg)
![In this image taken on May 27, 2013, a raspberry coconut ice box pie is shown served on a tray in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_473932956119-260x174.jpg)
![This Nov. 17, 2014 photo shows coconut pie in Concord, N.H. The coconut is processed with a bit of butter to help bind and brown it. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_796492493829-260x174.jpg)
![This June 8, 2015 photo shows raspberry rhubarb cream pie with oatmeal crust in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_764874451709-260x174.jpg)
![This Sept. 21, 2015 photo shows deep dish apple pie in Concord, NH. Apple pie ingredients are few and elemental: apples, of course, along with sugar, flavoring and pie crust. But choosing the right apples is a serious business. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_16300516671223-260x174.jpg)
![This June 1, 2015 photo shows the making of peach hand pies in Concord, N.H. (AP Photo/Matthew Mead)](https://wtop.com/wp-content/uploads/2017/03/AP_809783767907-260x174.jpg)