When working with circles it is important to recognise and be able to name different parts of the circle. A segment of a circle is an area enclosed by a chord and an arc. What is the name given to a ...

Pi is denoted by the Greek letter π. It is a mathematical constant and is approximately equal to 3.14159. It is defined as the ratio of a circle's circumference to its diameter. It was first ...

Brian Resnick was Vox’s science and health editor and is the co-creator of Unexplainable, Vox’s podcast about unanswered questions in science. March 14 is a date that coincidentally spells out the ...

Today is Pi Day. You know, March 14. 3/14 is sort of like 3.14. Get it? OK, it's a bit of a stretch because 3/14 looks like a fraction and not Pi. Whatever. We still call it Pi Day. Even if the date ...

Circles are some of the most beautiful and versatile shapes in nature. Every March 14, mathematics enthusiasts from all over the globe commemorate Pi Day and the International Day of Mathematics (IDM) ...