A pyramid with seven sides has 12 edges.
A pyramid based on a seven-sided base has 14 edges.
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7 faces,12 edges, 7 vertices
It has 7 faces, 12 edges and 7 vertices
A hexagonal pyramid has 7 faces, including the hexagonal base and 6 triangular faces. It has 12 edges, with 6 along the base and 6 connecting the base to the apex. Lastly, it has 7 vertices, with one at the apex, 6 along the base, and one where an edge meets the apex.
It will be an hexagonal based pyramid with 7 faces, 7 vertices and 12 edges
14. 7 for the base and 7 to meet at the top.