Pi Day is celebrated today, 14 March, round the world. Pi (Greek letter π) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its ...

As if math wasn't confusing enough, we have Pi to contend with. An irrational number that has no end. It sounds like an easy ...

But there's another holiday that offers an even better excuse to indulge in pie: Pi Day, celebrated on March 14, is a non-traditional holiday beloved by math geeks everywhere. If you’re planning ...