Question

Find the number of faces of a polyhedron with 21 edges and 14 vertices.​

Answer 1

Answer:

In geometry, the heptagonal prism is a prism with heptagonal base. This polyhedron has 9 faces, 21 edges, and 14 vertices.

Dual polyhedron: Heptagonal bipyramid

Faces: 2 Heptagons; 7 squares

Vertex configuration 7.4

Answer 2

Answer:

20

Step-by-step explanation:

We know that

E +2 = F + V ( Euler's formula)

So,

30 +2 = 12 + V

V = 32 - 12

V = 20.