There are a lot of common space figures that are well known. Some of these space figures can be considered as polyhedra but some like spheres, cylinders and cones are not polyhedra because they have curved surfaces as opposed to the flat surfaces of the polyhedra. Right now, let us focus more on the cone. A cone is known to be somewhat similar to a triangle in terms of shape but it has a circular base. The vertex is also the one on top and it may or may not be directly on the center of the base. If you have an ice cream cone at home, it will be like placing the ice cream cone upside down. This three-dimensional geometric shape may have a flat base or a circular base depending on what type of cone it is. Cones can have different volume results depending on their base area. Some say that a cone is highly similar to a pyramid but instead of having a square base, the base is more flat or circular.