Torus

A torus is a three-dimensional shape resembling a doughnut or inner tube, characterized by a circular ring with a hole in the middle. Mathematically, it’s formed by revolving a circle around an axis outside of it, creating a surface with continuous inner and outer boundaries. The torus is used in various fields like mathematics, physics, and computer graphics to model complex structures and phenomena. Its unique topology allows for interesting properties, such as having a genus of one, meaning it has a single hole, making it a fundamental form in topology and geometry.