greek+symbols

what is another significant number represented by a Greek letter, ie: Pi, Phi ect.? sigma: Sigma is an easier way of doing addition. 1 sigma 100 is 1+2+3+4... and so on to 100.

Pi is this number. Pi is the ratio between a circle's diameter and it's perimeter.

Phi is the golden ratio. .618.

These are all the Greek letters.