Chiliagon

Regular chiliagon
A regular chiliagon
TypeRegular polygon
Edges and vertices1000
Schläfli symbol{1000}, t{500}, tt{250}, ttt{125}
Coxeter–Dynkin diagrams
Symmetry groupDihedral (D1000), order 2×1000
Internal angle (degrees)179.64°
PropertiesConvex, cyclic, equilateral, isogonal, isotoxal
Dual polygonSelf

In geometry, a chiliagon (/ˈkɪliəɡɒn/) 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.