Tuesday was March 14, aka Pi Day. March 14 was picked to celebrate Pi, a mathematical sign, because its numerical date is the first three digits of Pi: 3.14. Pi is the constant ratio of any circle’s circumference to its diameter. It is an irrational never-ending number.

Pi has been known for almost 4000 years. Babylonians were the first to recognize the common ratio pi. They gave pi the value of three by squaring the radius and multiplying it by three. Other ancient countries also left evidence of knowing pi with different variations after the decimal point.  Eventually 3.141592653589793238…  was discovered to be the true value. In 1706 William Jones used the Greek letter π to represent the never-ending number. These days, π is known world wide as pi.

Pi Day can be celebrated by simple appreciation for this mathematic discovery, or my favorite way, with actual pie!