A seven-sided shape (polygon) is called a heptagon.
A six faced 3d shape is called a cube.
Enneahedral
It is called a trihedron. It does not exist.
it is called a seven sided shape in Canada
Any six-sided shape is a hexagon.
A six faced 3d shape is called a cube.
a McNeilapon
A polyhedron is a solid figure with many plane faces, usually greater than six. A polyhedron that has 7 faces is called a heptahedron.
Enneahedral
A hendecahedron.
A twelve sided shape is called a "dodecahedron" :D
Decahedreon
A pyramid.
It is a nonahedron.
It is called a trihedron. It does not exist.
Dodecahedron.
A cube or a cuboid