A cone has one vertex, one edge, and one base.
A right truncated cone.
It's a pentagonal pyramid.
A right cylindrical cone has a circle for a base and one vertex. a diagram is shown on unitmath.com
pyramid and coneIn the list given, only the cone and pyramid have a vertex.
A cone would fit the given description.
A diagonal in a shape is a straight line from one vertex to another vertex (corner).
A cone has one vertex and one edge.
An incomplete shape.