Edgeface
Edgeface is a term encountered in geometry and computer graphics to describe the relationship between an edge and the faces that share that edge on a polyhedral surface or mesh. It is not standardized as a formal mathematical object, but is used to refer to the set of incidences involving a given edge and its adjacent faces.
In convex polyhedra, every edge lies on exactly two faces; those faces are adjacent along the edge.
In mesh processing and rendering, knowledge of edge-face relationships is essential for traversal, normal calculation, and
Other uses of the term edgeface may appear as a product name, project label, or informal shorthand