A triangle mesh is a digital structure used to represent the surface of a 3D object by connecting many small triangles together. Each triangle is defined by three points, or vertices, in 3D space. By joining these triangles edge-to-edge, complex shapes and surfaces can be accurately modeled and visualized. Triangle meshes are fundamental in computer graphics, animation, video games, and 3D printing, as they allow computers to efficiently render and manipulate detailed objects. Their widespread use comes from their simplicity and the ability to approximate almost any shape with enough triangles.