Octagon, dodecagon, myriagon.
I stand corrected the largest sided polygon is a myriagon. Source the MIT. 1000 sided
I would call it a "ten-thousand sided polygon". Inventing (or memorizing) fancy names for all sorts of polygons, especially those with many sides, really doesn't make much sense.
a crescent has 19 sides
How many sides does a Decahedron Have
19999999999999
45
Myriagon
sedfatserasdfogagon myriagon
Octagon, dodecagon, myriagon.
a dodecahedron
i think is myriagon!!
I stand corrected the largest sided polygon is a myriagon. Source the MIT. 1000 sided
On etymological grounds I would be tempted to call a 1000 sided polygon a myriagon. I will also point out that for most purposes we would call it a circle, since with that many sides it very closely approaches circularity.
I would call it a "ten-thousand sided polygon". Inventing (or memorizing) fancy names for all sorts of polygons, especially those with many sides, really doesn't make much sense.
A myriagon looks almost like a circle. Here is a picture.
An infinite amount. It starts: Point Line Triangle - 3 sides Square - 4 sides Pentagon - 5 sides Hexagon - 6 sides Heptagon - 7 sides Octagon - 8 sides Nonagon - 9 sides Decagon - 10 sides Hendacagon -11 sides Dodecagon - 12 sides .... Hectogon - 100 sides .... Chiliagon - 1,000 sides .... Myriagon - 10,000 sides .... Hecatommyriagon - 1,000,000 sides The list never ends.