Pi Day Definitions
Pi Pun
Pi Facts
Pi Day Jokes
Pie Facts
100

From the center of a circle to the outside is called what?

Radius

100

A cheesy Italian dish that's a round favorite worldwide.

Pizza

100

This is the connection between Albert Einstein and Pi Day.

Birthday on March 14th

100

What's the math teacher's favorite dessert?

Pi

100

This is the best kind of pi

A delicious Pie.

200

Pi itself can be defined as the ratio between a circle's circumference to this

Diameter

200

The smallest finger on your hand – oddly, it starts with 3.14.

Pinkie

200

In the 1967 Star Trek episode "Wolf in the Fold", an out-of-control computer is contained by being instructed to do this

What is computing the last (or all) digits of pi

200

Why did pi fail its driving test?

Because it didn't know when to stop.

200

The most popular Thanksgiving pie is

Pumpkin Pie

300

True or False:

Pi is an infinite and non-repeating decimal.

True

300

An outdoor meal on a blanket – ants might crash it.

Picnic

300

What is “Pi-lish”?

a language made from the number Pi.

300

What is a mathematician’s favorite snake?

A Pi-thon

300

The first pies were filled with it.

Meat

400

The set of all points that are equidistant from the center is called

Circle

400

A festive party object you smash open for candy.

Piñata

400

Pi was used to hide secret messages in this war

In World War II, the Allies used pi to encode messages sent between the US and the UK.

400

Why should you never start talking to pi at a party?

Because it goes on forever.

400

The most popular pie is

Apple Pie

500

What are the first ten digits of pi?

3.1415926535

500

Winnie-the-Pooh’s little porcine friend – or any baby hog.

Piglet

500

When was the symbol pi (π) first used?

The symbol for pi (π) was first used by William Jones in 1706, and popularized by Leonhard Euler.

500

Why shouldn’t you eat too much pi?

You'll end up with a large circumference.

500

This is the unofficial Iowa state pie.

Sour Cream Raisin pie

600

What is pi classified as in the real number system?

Irrational

600

Leafy green that gave Popeye his super strength.

Spinach

600

Pi got its name from the Greek word for this

The mathematical constant π (pi), got its name from the Greek word "periphery" (Perimeter), which is the first letter of the Greek word for periphery (περιφέρεια)

600

What do you call it when someone gets a huge tattoo of pi on their face?

An irrational decision.

600

One of the interesting names for Pie's crusty shell is

"Coffyns"

700

Another name by which Pi is called.

What is Circular Constant, Archimedes Constant, and/or Ludolph's Number?

700

A curve winding around a center point – it goes round and round infinitely.

Spiral

700

People in Egypt believed that this pyramid was built on the principles of pi.

The pyramids of Giza.

700

What do you get when you divide a jack-o-lantern by its diameter?

Pumpkin pi

700

The origins of the pie date back to this ancient age

The Neolithic Age

800

What is the formula for finding the circumference or area of a circle?

C=2*pi*r

A=pi*r2

800

Variety, seasoning, or “zing” – you might add this to food for flavor.

Spice

800

True or False: 

If you write down your life and turn it into numbers, you can find that number in the digits of pi.

TRUE. The digits of pi contain all possible sequences of numbers. Otherwise pi would not be irrational.

800

Why is Pi so lucky in love?

Because its love is infinite and non-repeating.

800

How many millions of pies are sold on average each year in North America?

700 million

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