There is 1 curved surface on a sphere
Cylinder
A cylinder perhaps.
cylinder
It has three shapes. Two surfaces are flat circles and one is a curved rectangle.
2 flat and 1 curved
There is 1 curved surface on a sphere
one all around
Cylinder
yes
A cylinder
A cylinder perhaps.
cylinder
Cylinder
How about a cylinder, a cone and a sphere
A cone and a cylinder are two of them
A cylinder has two curved surfaces. It also has one rectangular surface. These are also called faces. An exploded diagram is one way to see this postulation.