No, it has six.
A hexagonal pyramid has a hexagon base and six triangular sides. This gives it 7 faces and 12 edges. It also has 7 vertices.
12
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.
A pyramid with seven sides has 12 edges. A pyramid based on a seven-sided base has 14 edges.
12
Since each triangular face will have a base at an edge of the hexagon base, there will be 6 triangular faces and 1 hexagon at the base. Each triangle will have an edge at the base that it shares with the hexagon. Each triangle will have two other edges that it shares with the two adjacent triangles. We can thus get the number of edges by counting the number of triangles and then add the number of base edges - 6 + 6 = 12.
12 A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.
You cannot. For example: 6 faces can be a cuboid (8 vertices and 12 edges) or it can by a triangular di-pyramid (5 vertices, 9 edges). Incidentally, a triangular di-pyramid is just two triangular pyramids stuck together at one face.
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 12 edges, 7 vertices, 12 edges
A hexagonal pyramid has a hexagonal base and six triangular faces. The triangles are attached to the sides of the hexagon and meet at an apex in a plane above the base.A hexagonal pyramid has 7 faces, 7 vertices and 12 edges.
No, a rectangular pyramid has 8 edges. There are 4 around the base (the rectangle). Then, there are 4 others: one from each corner of the base (a rectangle has 4 corners) to the point of the pyramid.
Cube: 12, square based pyramid: 8