Answer:
pentahedron, hexahedron and heptahedron
Explanation:
We have that a polyhedron is a geometric body whose faces are flat and contain a finite volume, depending on the number of faces, its name varies.
Now a tetrahedron has 4 faces and an octahedron has 8, therefore there are 3 polyhedra that fit the description, the following:
pentahedron 5 faces
hexahedron 6 faces
heptahedron 7 faces
Which means that the pentahedron, hexahedron and heptahedron could be those polyhedron