I would call it a 84-gon. Keep it simple! Not only is the use of long Greek prefices pretentious, it will probably require the reader to use a dictionary.
A polygon with 12 sides is called a dodecagon.
an Irregular Polygon
A polygon.
A polygon with 11 sides is called an "undecagon."
A polygon with ten sides would be called a decagon.
There are names made up of standard prefixes and sufixes for polygons of virtually any numbers of sides. While octacontakaitetragon is the name of an 84 sided polygon and a triacontakaitrigon is a 33 sided polygon, it is customary and far more practical to call them 84-gons or 33-gons.
A polygon with 1,000 sides is known as a chiliagon. A hectogon is a polygon that has 100 sides, and a polygon with 8 sides is called an octagon.
a polygon with 12 sides is called a.. dodecagon
A polygon with 12 sides is called a dodecagon.
A polygon with 5 sides is called a pentagon.
A regular polygon
an Irregular Polygon
the 11th sides of polygon is called UNDECAGON....... the 12th sides is DODECAGON.....
It is known as a regular polygon that has equal sides of the same lengths.
Any polygon has 3 or more sides
Just call it a "24-sided polygon".
A cyclic polygon.