A 734-sided figure is called a "734-gon." In geometry, polygons are named based on the number of their sides, typically using a prefix that indicates the number of sides followed by the suffix "-gon." For example, a polygon with three sides is a triangle, while one with four sides is a quadrilateral, and so on.
Technically, that's a heptahectatriacontakaitetragon, but most scientists would refer to it as a "734-gon."
a pentagon.
Nonagon.
I would call it a 102-gon.
quadrilateral
A 17 sided figure is a heptadecagon.
1200 sided figure is chiliadihectagon
Technically, that's a heptahectatriacontakaitetragon, but most scientists would refer to it as a "734-gon."
Nonagon
it is a Dodecagon
icosikaihena
octogon
hexagon
a pentagon.
Nonagon.
I would call it a 102-gon.
octogon an octagon