Olivia Harvey
March 13, 2018 3:08 pm

Each year, mathematicians everywhere recognize March 14th as a sacred holiday — Pi Day. On March 14th (3.14), those who know and love Pi (π), the ratio of a circle’s circumference to its diameter (which is also 3.14), come together, eat actual pie, and revel in the beauty that is the endless number. And if you’re one of the many math-heads who will take part in Pi Day celebrations, here are 17 Instagram captions that will really round out your post — get it? Round? Circles? Never mind.

The boggling fact about Pi is that the decimal is seemingly endless. In recent history, Pi has been calculated to over one trillion digits past its decimal. What’s more is that the numbers that make up Pi are completely patternless. You can actually scroll through the first one million digits of Pi on PiDay.org, and you don’t have to be a math nerd to be amazed by the infiniteness of Pi.

Pi Day is celebrated every year. But some of the most notable Pi Day events took place in 2015. That’s because the date read 3.14.15, and the first five digits of Pi are 3.1415. We won’t see another accurate date and Pi matchup that good until the year 2115.

So get excited and throw a couple of Pi-themed pies in the oven. Pi Day and your Instagram await.

1Say it ain’t so!

2No you!

3Just a fun Pi fact.

4Just another fun Pi fact.

5TGIπ

6The good outweighs the bad, right?

7“I Eight Sum Pi…”

8For those of you who’d rather just sit this one out.

9Ha! Good luck, thieves…and also me…

10Stop! You’ll make us blush.

11You nerds know our weakness.

12*Conspiracy Alert*

13‘Tis the season!

14If Nicholas Sparks became a mathematician:

15Jessica, you’re literally being Pi right now.

16If Nicholas Sparks became a mathematician Pt. 2:

17Aw!

Happy Pi Day, everyone. We hope you infinitely and irrationally enjoy your day!

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