56-gon
The name of a 56 sided polygon is Hexapentacontagon.
The name of a 51 sided polygon is Pentaconhenagon. The name of a 52 sided polygon is Pentacondigon. The name of a 53 sided polygon is Pentacontrigon. The name of a 54 sided polygon is Pentacontetragon. The name of a 55 sided polygon is Pentaconpentagon. The name of a 56 sided polygon is Pentaconheptagon. The name of a 57 sided polygon is Pentaconhexagon. The name of a 58 sided polygon is Pentaconoctagon. The name of a 59 sided polygon is Pentaconenneagon.
Every polygon known has a unique name. These names are created, usually based of the number of sides on the polygon. The pentacontakaihexagon is a polygon with 56 sides.
The name of a 12 sided polygon is Dodecagon.
56*(56-3)/2 which is 1484
name of 4000 sided polygon
A 8 sided polygon is called a octagon.
The name of a 10 sided polygon is Decagon.
The name of a 19 sided polygon is enneadecagon.
The name of a 9 sided polygon is Nonagon.
The name of a 15 sided polygon is Pentadecagon.
The name of a 7 sided polygon is Heptagon.