enneagram
nonagon
octagon
heptagon
undecagon
hexagon
enneacontahexagon
octiamond
dodecagon
tessellation
poly
enneagon
stellation
trilateral
triangle
trigon
decagon
capping
subsimplex
hendecagram
equilateral triangle
equiangular triangle
basiconic
dihedral group
pentagon
regular prism
tetrakaidecagon
quadrangle
stellated
tetradecagon
Platonic solid
quadrilateral
tetragon
Kepler solid
googolgon
hendecagon
octagram
octahedron
nonahedron
pointel
hexahectaenneacontakaiheptagon
deltahedron
8-cell
pentacube
polygonal
enneacontagon
rhombidodecahedron
hexadecagon
septagon
polycentrically