A heptahedron is a closed 3-d shape with 7 polygonal faces. There are 34 topologically different convex heptahedra and, since none of these are regular, the term is ambiguous. Only the right pentagonal prism, a very special version of one of the 34 topological forms has 5 faces which are perprdicular to the other 2.
A pentagonal heptahedron. A heptahedron is a solid figure with seven faces, and a pentagon is a five-sided plane figure.
There is no simple answer to this question. Polyhedra are named according to the number of faces that they have. A heptahedron is a 3-dimensional shape with 7 faces. It could be in the form of a pyramid with a hexagonal base. In that case, it has 7 vertices. Or it could be in the form of a prism with pentagonal bases and in that case it has 10 vertices. There are many different configurations, and the number of vertices varies. As stated in the answer by Ngc0202, there can be anything from 6 to 10 vertices.
This shape has 2 opposite identical faces and some other which are parallelograms is a prism. A cylinder shape has 2 circular faces and one curved face.
In 2 dimensional space: a heptagon In 3 dimensional space: a heptahedron.
a prism
OCTOHEDRON
A prism.
Hexagon based prism
hexagon base prism
rectangular prism.It has 6 faces and 12 edges. The 2 bases are congruent to each other, and the remaining 4 faces are congruent to each other, but the bases are not necessarily congruent to the other faces.
A Ronagon
prism