None, they have vertices.
I think it has none ,bc a square doesn't
one.
An infinite number of curved sides
No.
If the figure has curved edges, then it's not a "rectangle".
None, they have vertices.
2 plane faces, 1 curved face
0 Curved faces in cube
There is only 1 curved face!
There cannot be such a shape. It is not a cylinder because a cylinder sdoes not have a rectangular face. A rectangle must be a flat face and the only flat faces in a cylinder are the circle faces. The curved face can be "opened out" into a rectangular shape but because the face is curved it cannot be rectangular.
I think it has none ,bc a square doesn't
one.
An infinite number of curved sides
No.
An oval.
One flat face and one curved face.