circles and ovals
In 3-D, spheres and oblate spheroids
sphere, cylinder and a cone
Cylinders
A cone
A common 3D shape that is not a polyhedron is a sphere. Unlike polyhedra, which are formed by flat polygonal faces, a sphere is characterized by its smooth, curved surface and has no edges or vertices. Other examples of non-polyhedral 3D shapes include cylinders and cones, which also feature curved surfaces.
A cylinder. Also, howsabout a hemisphere ?
A cylinder has two parallel congruent faces and a curved surface.
Cylinder
sphere, cylinder and a cone
That will depend on what they are but in general 3D shapes have surface area and volume whereas 2D shapes have only surface area.
Cylinders
A cone
A common 3D shape that is not a polyhedron is a sphere. Unlike polyhedra, which are formed by flat polygonal faces, a sphere is characterized by its smooth, curved surface and has no edges or vertices. Other examples of non-polyhedral 3D shapes include cylinders and cones, which also feature curved surfaces.
A cylinder
cone
A cylinder. Also, howsabout a hemisphere ?
A cylinder is a solid shape that has a curved surface. It features two parallel circular bases connected by a curved surface that wraps around the sides. Other examples of solid shapes with curved surfaces include spheres and cones. Each of these shapes has distinct characteristics but shares the common feature of having at least one curved surface.
Yes they are made out of 12 curved shapes (ellipses) called gores.