Chiliagon
In geometry, a chiliagon or 1,000-gon is a polygon with 1,000 sides. Philosophers commonly refer to chiliagons to illustrate ideas about the nature and workings of thought, meaning, and mental representation. Wikipedia
Dual polygon: Self
Edges and vertices: 1000
Schläfli symbol: t, tt, ttt
Symmetry group: Dihedral (D1000), order 2×1000