A tetrahedron has four faces.
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A tetrahedron has 4 faces.
4 faces
By definition, it has four faces.
A square pyramid has 1 more face than a tetrahedron. A tetrahedron has 4 faces (equilateral triangles), while a square pyramid has 5 faces (4 triangles and 1 square base). Therefore, the square pyramid has one additional face compared to the tetrahedron.
Four faces, six edges and four vertices.