👉 Undergirth is a mathematical concept in physics and engineering that represents the distance between two points on a curve, such as a line or a sphere. It's often used to describe how far apart two points are along an object's path. In terms of geometry, it can be defined as the distance from one point (the "pivot") to another point (the "endpoint"). For example, in a circle, the undergirth is the length between any two points on the circumference.
