A cone has a round base and a narrowing round top. I hope this answers your question!
pyramid
8 lateral faces and a base
8
cone; circle is the base
pyramid An pyramid is a geometric solid of the shape made famous by the royal tombs of ancient Egypt. It is a solid whose base is a polygon and whose lateral faces are triangles with a common vertex
A solid figure with a pentagon as its base and triangular faces is called a pentagonal prism. In this 3D shape, the two pentagonal bases are parallel and connected by five rectangular lateral faces. However, if you specifically mean a solid with a pentagonal base and triangular faces that converge at a single point, then it is known as a pentagonal pyramid.
pyramid
A pyramid
Any face that is not a base of a solid is called a lateral face. In three-dimensional geometry, lateral faces connect the edges of the base and contribute to the overall shape of the solid. For example, in a prism, the lateral faces are the sides that are not the top or bottom bases.
Such a figure is a pyramid.
It is a pyramid
The figure is a pyramid and the base is a square.
The solid figure described is a prism. In a prism, the two congruent polygons serve as the bases, while the lateral faces, which connect the corresponding sides of the bases, are rectangles. The type of prism is named after the shape of its base; for example, a triangular prism has triangular bases.
A pyramid
lateral faces
A 3D shape with one base and three faces can only have triangular faces.
pyramid