An octagon.
an Octagon
It is an octagon
The shape or symbol used to denote infinity is a 8 on its side: "∞"
octagon
No not just any shape that has 8 side can be called an octagon. An octagon has straight lines that make up a closed bounded shape.
The shape or symbol used to denote infinity is a 8 on its side: "∞"
It does not exist.
Octagon
A 7 sided shape is a heptagon
dodecagon
Decagon
pentadecahedron