### What are the names of all 2d shapes?

There are an infinite number. A circle has no sides technically,
a triangle has three, a rectangle has four, a pentagon has five,
and so on like this.
6-hexagon
7-heptagon
8-octagon
9-nonagon
10-decagon
11-monodecagon-not sure on this one
12-dodecagon
13-tridecagon
14-not sure-maybe quartadecagon?
I'm not sure on the others, but they go on like this using Latin
and Greek numerical word roots and the suffix -gon.
Answer From Hyusuf
henagon (or monogon) 1
digon 2
triangle (or trigon) 3
quadrilateral (or tetragon) 4
pentagon 5
hexagon 6
heptagon 7
octagon 8
enneagon (or nonagon) 9
decagon 10
hendecagon 11
dodecagon 12
tridecagon or triskaidecagon 13
tetradecagon or tetrakaidecagon 14
pentadecagon (or quindecagon) or pentakaidecagon 15
hexadecagon or hexakaidecagon 16
heptadecagon or heptakaidecagon 17
octadecagon or octakaidecagon 18
enneadecagon or enneakaidecagon or nonadecagon 19
icosagon 20
icosihenagon 21
triacontagon 30
tetracontagon 40
tetracontaheptagon 47
pentacontagon 50
hexacontagon 60
heptacontagon 70
octacontagon 80
enneacontagon 90
hectagon (also hectogon) 100
chiliagon 1000
myriagon 10,000
decemyriagon 100,000
megagon 1,000,000
apeirogon (infinite)
The more sides a shape has, the more it looks like a circle.
a decemyriagon may look like a circle at first, but it's just a
shape with 100,000 sides.
I hope this helped!