quadrangle
quadrilateral
tetragon
fourgon
pentagon
trigon
trilateral
triangle
hexagon
tetracontagon
hexacontagon
polygonal
triacontatetragon
triacontakaitetragon
poly
equiangular triangle
equilateral triangle
octadecagon
pentacontagon
square
hectogon
hexahectaenneacontakaiheptagon
icositetragon
heptagon
henagon
polyangle
icositrigon
nonagon
excircle
heptacontagon
hectagon
regular polygon
decagon
octagon
many-sided
teragon
undecagon
tessellation
incircle
foursquare
heptadecagon
convex polyhedron
isogon
enneagon
googolgon
bigon
tetracontakaihexagon
geometrical regularity
digon
apothem
regularity
enneadecagon
meshlet
kilogon
concave polygon
octacontagon
triacontagon
megagon
polygonically
dihectagon
apeirogon
polygonic
multipolygon
polygonous
tetrakaidecagon
polygonate
polygonar
enneacontahexagon
polygonial
tetradecagon
pyramid
reentrant polygon
dodecagon
icosagon
reentering polygon
enneacontagon
Platonic solid
Platonic body
ideal solid
concave polyhedron
sidelength
regular convex solid
regular polyhedron
regular convex polyhedron
icosihenagon
icosikaidigon
cyclic quadrilateral
triacontadigon
icosidigon