The number of faces a pyramid has depends on the shape of its base:
- A square pyramid has 5 faces in total: 1 square base and 4 triangular faces
- A triangular pyramid (also called a tetrahedron) has 4 faces, all of which are triangles
- More generally, a pyramid with an n-sided polygon as its base will have n+1n+1n+1 faces (the base plus the n triangular faces connecting the base to the apex)
So, for the most common pyramid types:
- Square pyramid: 5 faces
- Triangular pyramid: 4 faces
- Hexagonal pyramid: 7 faces (6 triangular faces + 1 hexagonal base)
In summary, the total number of faces of a pyramid is the number of sides of its base polygon plus one.