👉 Ordinarius, in the context of mathematics and geometry, refers to a point on a line segment or a curve. Specifically, it is used in the study of curves and surfaces, which often involve complex mathematical concepts such as integrals, derivatives, and vector fields. In a plane, an ordinarius (or "center") is defined by its distance from a given point P on the curve. This distance can be calculated using the formula: \[ \text{Ordinarius} = \
