thumb|upright|Octagonal zonogon thumb|Tessellation by irregular hexagonal zonogons thumb|upright|Regular octagon tiled by squares and rhombi
thumb|upright|Octagonal zonogon thumb|Tessellation by irregular hexagonal zonogons thumb|upright|Regular octagon tiled by squares and rhombi
In geometry, a zonogon is a centrally-symmetric, convex polygon. Equivalently, it is a convex polygon whose sides can be grouped into parallel pairs with equal lengths and opposite orientations, the two-dimensional analogue of a zonohedron, or the two-dimensional case of a zonotope.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).