Spin.........cycles.......................full circle............is it the Mayan calendar.........or one from Africa??

Pi (π)

Draw a circle with a diameter (all the way across the circle) of 1
Then the circumference (all the way around the circle) is 3.14159265... a number known as Pi

Pi is often written using the greek symbol π

The definition of π is:

The Circumference
divided by the Diameter
of a Circle.

 
To help you remember what π is ... just draw this diagram.

Finding Pi Yourself

Draw a circle, or use something circular like a plate.