Enneahedral
A six faced 3d shape is called a cube.
It is called a nonagon and/or an enneagon. They belong to the greater family of polygons.
It is called a trihedron. It does not exist.
Either a nonagon or an enneagon. Whichever floats your boat.
A nine sided two dimensional shape would be called a nonagon. Nona is a common prefix meaning nine of something.
nonagon A nonagon is a nine faced shape.
A six faced 3d shape is called a cube.
A 2d nine sided shape is called a nonagon.
A nine sided shape is called a nonagon.
A hendecahedron.
A twelve sided shape is called a "dodecahedron" :D
It is called a Nonagon
Decahedreon
It is a nonahedron.
A pyramid.
A nine sided POLYGON is called a nonagon. Any plain shape bounded by nine straight sides is a nonagon.
An eight-faced 3D shape is called an octahedron. Any 3D shape (polyhedron) ends in -hedron, just like any 2D shape (polygon) ends in -gon, and octa- means 8.