One.
A hexagon based pyramid has 7 corners.
6
6+1 = 7 vertices.
6
A hexagon-based pyramid has 7 vertices, 12 edges, and 7 faces. The base, which is a hexagon, contributes 6 edges and 6 vertices, while the apex of the pyramid adds 1 additional vertex and 6 more edges connecting the apex to each vertex of the hexagon. The faces consist of the hexagonal base and 6 triangular faces that connect the apex to each side of the hexagon.
NO
Subtract 1 from the number of vertices. Find the name of the polygon with that many sides. The pyramid has that polygon as its base. So, for example, 7 vertices. Subtract one and that gives 6. A six sided polygon is a hexagon. So the shape is a hexagon based (or hexagonal) pyramid.
A hexagon based pyramid.
A hexagon based pyramid.
What's the question? A pyramid is a construction with triangular sides which meet in a point. The base can be any polygon shape.
A hexagon based pyramid.
There are many possibilities. Some of them are: A nonagon-based pyramid. A hexagonal prism. A hexagonal dipyramid (two hexagon-based pyramids stuck together on their bases).