A cone. A hemisphere.
Just one at the base, the rest is a curved surface
A paraboloid.
a sphere
a cone
A sphere has one surface that's also curved and has no base.
A paraboloid.
It has just the one curved surface area and and its base
A cone.
A cone.
A cone. A hemisphere.
cone
Just one at the base, the rest is a curved surface
A paraboloid.
A cone.
a sphere
A hemisphere has no edges. It has one curved surface that smoothly transitions from the curved side to its base.