(KUTV) — It's Pi Day!

What once was just another day in March, has now become a holiday of sorts where Pi, often represented by the Greek letter ?, is celebrated with food and fun.

Pi represents a mathematical constant, the ratio of the circumference of a circle to its diameter. The number goes on infinitely, but it's most often remembered by its first three digits 3.14, and that's why we celebrate Pi Day on March 14, according to an article in Thrillist.

Some fun facts about Pi Day are:

- Pi is an infinite number and, therefore, ever single digit will never be determined.
- Pi has its own writing style called Pilish.
- Pi can be hand-calculated by using a protractor. Simply draw a circle using the instrument and measure its diameter with a ruler.
- Pi was discovered more than 4,000 years ago by the Babylonians.
- The first Pi Day was celebrated in 1988 in San Francisco.
- Two of the world's most famous geniuses were born on March 14 - Albert Einstein and Stephen Hawking.

Looking for a deal today to commemorate Pi Day? Check out these places for deals:

**Hungry Howie's**

Order a medium one-topping pizza for just $3.14 with the purchase of any bread at regular price. The deal is only good on carryout orders with the code "19PI."

**7-Eleven**

Order a whole pizza via 7-Eleven's 7NOW and it'll be -- get this -- $3.14. There are delivery charges, but your first three deliveries when you start an account are free. Also, in-store, you can get a 50-cent slice of pizza if you're a 7Rewards member. (You also get a bunch of bonus points if you order the whole pizza in-store.)

**Blaze Pizza**

Order through the chain's app (as long as you download before Pi Day) and you can get a pizza for $3.14.

**Cici's**

Stop in and get an adult buffet for just $3.14 with the purchase of another adult buffet and large drink. You'll need this coupon, though.

**Schlotzsky's**

It's not only Pi Day but National Potato Chip Day. To celebrate, order an entrée at Schlotzsky's and you'll get hooked up with all that and a free bag of chips.

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