PI-rate Knowledge
Pi itself can be defined as the ratio between a circle's circumference to this
Diameter
This is the connection between Albert Einstein and Pi Day.
Birthday on March 14th
What's the math teacher's favorite dessert?
Pi
This is the best kind of pi
A delicious Pie.
The set of all points that are equidistant from the center is called
Circle
People in Egypt believed that this pyramid was built on the principles of pi
The pyramids of Giza.
Why did pi fail its driving test?
Because it didn't know when to stop.
The most popular Thanksgiving pie is
Pumpkin Pie
What is pi classified as in the real number system?
Irrational
BONUS +150 pts!
sub category: transcendental
What is “Pi-lish”?
A language made from the number Pi.
What is a mathematician’s favorite snake?
A Pi-thon
The first pies were filled with it.
Meat
As of 2025, pi has been calculated to how many digits?
Over 100 trillion digits using advanced quantum computing technology.
What is the current world record for the most digits of pi memorized?
The current world record for memorizing π stands at 70,000 digits, achieved in 2024 after a 24-hour recitation.
What language should you use on Pi Day?
Sine Language
The most popular pie is
Apple Pie
From which ancient civilization was the earliest known approximation of pi uncovered
The ancient Babylonians calculated π as 3.125 around 1900 BCE.
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.
Why shouldn’t you eat too much pi?
You'll end up with a large circumference.
This is the unofficial Pennsylvania state pie.
Shoofly or Molasses Pi
Another name by which Pi is called
What is Circular Constant, Archimedes Constant, and/or Ludolph's Number?
Pi has inspired numerous works of art and literature, name the critically acclaimed novel by Yann Martel inspired by and contains the word Pi?
Life of Pi
What do you call it when someone gets a huge tattoo of pi on their face?
An irrational decision.
One of the interesting names for Pie's crusty shell is
"Coffyns"
Pi got its name (and symbol) from the Greek word for this
"Periphery" (Perimeter), which is the first letter of the Greek word for periphery (περιφέρεια)
There are no polynomial equations whose root is pi
TRUE or FALSE
TRUE
BONUS +350 points!
What do you get when you divide a jack-o-lantern by its diameter?
Pumpkin pi
The origins of the pie date back to this ancient age
The Neolithic Age
When was the pi symbol first used?
The symbol π was first used by Welsh mathematician William Jones in 1706 and popularized by Leonhard Euler in 1737.
With only ____ digits of pi you can calculate the circumference of a circle as wide as the observable universe to within one planck length (the smallest meaningful distance in physics).
63
Why don't you want to get hit in the face with pi?
Because it never ends.
How many millions of pies are sold on average each year in North America?
700 million