All pyramids are three-dimensional shapes. The number of vertices depends upon the shape of its based, which doesn't have to be a square or rectangle. The number of vertices is equal to n+1 , where n is the number of sides in the base polygon.
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Verticies are the corners, where edges meet. There are 5 verticies in a pyramid.
4
1 more.
9: the eight vertices of the octagon plus the vertex at the apex of the pyramid.
A square base pyramid has 8 edges and 5 vertices.