It's Pi Day! March 14th is the day that mathematicians everywhere celebrate with pie and other treats. But what is pi? And who invented it? In 1647‚ William Oughtred coined the name and used it as a symbol‚ and it was not until 1737 that Leonhard Euler first used it to represent it.

March 14, Albert Einstein’s birth date. In some parts of the world this date is also known as Pi Day.

In November 2019, in its General Conference, UNESCO, announced Pi Day as the International Day of Mathematics.

Thanks @livemint for the “PLAIN FACTS” piece. pic.twitter.com/EOzBRmFHep — Nirmala Sitharaman (@nsitharaman) March 14, 2022

14 March is #MathematicsDay!

Let's celebrate today the power of #mathematics to help us understand the world and build a better future for all.

🧮 https://t.co/rLzgBmD5gQ #PiDay pic.twitter.com/CPWA97O2Sj — UNESCO 🏛️ #Education #Sciences #Culture 🇺🇳😷 (@UNESCO) March 14, 2022