reentrant polygon
reentering polygon
henagon
exterior angle
zonogon
hexagon
square
internal angle
interior angle
digon
polygonal
bigon
pentagon
decagon
regular polygon
hexagram
foursquare
hexacontagon
chiliagon
octagon
quadrilateral
septagon
heptagon
triacontakaitetragon
equiangular
triacontatetragon
hendecagon
reentering angle
reentrant angle
quadrangle
tetragon
cupola
nonagon
antiprism
net
hectogon
polyform
external angle
tetradecagon
tetrakaidecagon
octadecagon
undecagon
apothem
triangle
icositrigon
hexahectaenneacontakaiheptagon
pentacontagon
dihectagon
octacontagon
icositetragon
concave polyhedron
heptadecagon
icosihenagon
prism
face angle
triacontadigon
fourgon
megagon
convex polyhedron
enneagon
isogon
many-sided
salient angle
teragon
regular convex polyhedron
geometrical regularity
Platonic body
enneadecagon
kilogon
Platonic solid
regular polyhedron
regular convex solid
regularity
ideal solid
hexecontahedron
hectagon
myriagon
googolgon
dodecagon
square annulus
infinigon
midcircle
hexadecagon
interpolygon
pyramid