👉 In mathematics, a curvant is a curve that is both concave and convex. A concave or oblique shape has an angle between its sides greater than 90 degrees relative to their axis of symmetry. A convex or straight shape has an angle less than 90 degrees relative to its axis of symmetry. Curvatures are used in the field of fluid dynamics, where they describe how a fluid flows around a surface. For example, consider a conical pendulum, which is