rectangular pyramid
How about a hemisphere ?
How about a cone or a pyramid
Because the base of a cone is round, it is the only three dimensional figure with only one vertex.
A hemisphere is one example.
pyramid or cone
How about a cone or maybe a pyramid
A 3D shape with one base and three faces can only have triangular faces.
# Square Pyramid # Rectangular Pyramid # Triangular Pyramid
cone; circle is the base
This figure is a CONE.
Such a figure is a pyramid.
A geometric figure with a polygonal base and triangular sides is called a pyramid.