A hexagon is a six sided figure so, a hexagonal base has six triangular sides. Each triangle has three vertices, so such a pyramid has 18 vertices
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A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 7 vertices
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 7 vertices
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 pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 6 sides, 1 base = 7 faces Save
since the base is a hexagon my guess if this has a name would be: hexagonal pyramid