The vertex or vertices (plural) are the points that a 3-dimensional figure makes. A square-based pyramid will have 5 vertices, the 4 points the square makes, and the point at the top of the pyramid
Because the base of a cone is round, it is the only three dimensional figure with only one vertex.
vertex or vertices
vertex
vertex
An edge is where two faces of a three dimensional figure meet. An vertex is where three edges meet.
triangular prism
A vertex of a cube is its corner points. A cube has 8 vertices and six faces. It also has 12 edges. A cube is a three-dimensional figure.
A cone
All three dimensional figures have more faces than a one dimensional figure. There are an infinite number of one dimensional points on a three dimensional figure
it is a three dimensional cone , the circle is the edge of the figure and the curved side is the body of the cone, the vertex is the point of the cone
Pedantically, no. A polyhedron is a three dimensional figure (with some additional qualities). Polyhedra are three dimensional figures.
A pyramid is a four-sided, three-dimensional figure.