👉 Circumlitio, in classical Greek mathematics, is a concept that refers to the distance along an arc of a circle. It is typically used in geometry and trigonometry, where it represents the length of the path that a point travels around a closed curve or shape. In geometry, a circumcircle (or circumarcus) is a circle that passes through all the points on the circumference of another circle (the original circle). A circle with center O and radius r is called an