then it's a - Dodecahedron
A hexagonal based pyramid seems to fit the given description
A cube, a cuboid, a parallelopiped are three examples. The name for a general shape of this family would probably be a quadrilateral hexahedron (six faces, each of which is a four-sided plane figure)..
A twelve sided shape is a dodecagon.
There are twelve edges in a rectangular prism.
A Cube
cube, cuboid, trapezoid prism
then it's a - Dodecahedron
a pentagonal pyrimad
a twelve sided shape with 12 faces, 30 edges and 20 vertices.
A quadrilateral based dipyramid.
An octahedron is a polyhedron with eight faces, twelve edges, and six vertices
A cube has twelve edges.
the edges of a shape are basicly the sides of a shape
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. An octohedron can have 12 to 18 edges.
A hexagonal based pyramid seems to fit the given description
A cube, a cuboid, a parallelopiped are three examples. The name for a general shape of this family would probably be a quadrilateral hexahedron (six faces, each of which is a four-sided plane figure)..