👉 Outfaces are a type of graph, commonly used in computer graphics and computational geometry. In these graphs, the vertices represent points on the surface of a three-dimensional object, while the edges connect adjacent vertices. Outfaces allow for efficient computation of geometric transformations such as translations, rotations, scaling, and reflections. In computer graphics, outfaces are often used to represent objects that have multiple representations or different viewpoints. For example, an object might be represented by two outfaces: one for its top view