4
For a pyramid with a triangle base- 4 vertices (plural of vertex)
For a pyramid with a square base- 5 vertices
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5 vertexes, 4 faces, and 8 edges
A hexagonal pyramid has 12 edges, 7 vertices and 7 faces.
A polyhedron as for example a pyramid
A cylinder has no vertices (not vertexes!) It has 2 circular edges.
6 edges 4 vertexes