Pythagoras was a theory developed by a scientist who was greek and dutched all day long
If you wrap the length of the radius of a circle around the perimeter (circumference) Pi times you come to the point diametrically opposite from where you started (180°) Half of that (Pi/2) is 90° around the the circle.
Pi is the 16th letter of the Greek alphabet
PI the 16th greek letter is the circumference divided by the diameter of a circle. For example 40.5/12.89 = PI.
Because pi = 0.5*tau
yes pi is used around the world today
3.14 is short for pi. Pi can go on forever and ever. It's just a rounded number of pi to make things easier to understand.
this sequence appears in pi around 1000 digits into it
Any circle's circumference divided by its diameter has a value of pi
3.1415926535897932384626433832795…
Greek.
The Greek alphabet.
Pi has to do with circumference, because if you divide the circumference of a circle by its diameter, you always get pi (which is around 3.14).