In geometry, a stellation diagram or stellation pattern is a two-dimensional diagram in the plane of some face of a polyhedron, showing lines where other face planes intersect with this one.
Usually unbounded regions are excluded from the diagram, along with any portions of the lines extending to infinity.
A collection of these diagrams, one for each face type, can be used to represent any stellation of the polyhedron, by shading the regions which should appear in that stellation.
A stellation diagram exists for every face of a given polyhedron.
Semiregular polyhedra like the Archimedean solids will have different stellation diagrams for different kinds of faces.