That's impossible. A shape has three or more sides/faces. There is NO shape that has one or two sides/faces
the face
Any one of the plain surfaces of a solid, three-dimensional shape. Also Called -- side
Its an Cylinder
hemisphere
A sphere
A blob.
If you have one flat face and I have one curved face, which one of us is the 3d shape? Anyway, a 3d shape with pne f;at, circular face and one curved face could be: a section of a sphere or a section of an ellipsoid cut by a plane parallel to one of its axes, a section of a paraboloid or a cone. There are probably other shapes.
A cylinder !
A cone.
Mobius strip
An edge.
A cone
hemisphere
They both have a face, not a :) face but a side of a shape is called a face and a 2d and 3d shape both show a face of the shape
Hemisphere
sphere