a cone
CONE
Any polyhedron.
cone
A cone.
a coneA cone.
Cone
None
A 3D shape with one vertex is called a cone. It has a circular base and a single apex (the vertex) where all the lines from the base converge. The shape tapers smoothly from the base to the vertex, creating a pointed top. Other examples of shapes with one vertex include certain types of pyramids, but cones are the most common reference for this characteristic.
a cone
cone
The 3D shape with one face and one vertex is a cone. A cone has a circular base that serves as its singular face, while the point at the top where all the lines from the base converge is the vertex. It can also be considered an apex, where the shape tapers to a single point.
A cone seems to fit the given description