It looks like a 3D shape that has 9 sides (the cousin of an octogon).
An Octogon An Octogon regular regular
Octagon
octogon
An octogon can be regular (all sides of equal length) or irregular (all sides not of the same length).
octogon
octogon
octogon
An octogon
OCTOgon
An octogon.
octogon