the face
the 3d shape that that has no flat face is the circle
a sphere :)))
Sphere
it is a 3d shape because it is not flat
a cube
No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.
A 2D shape is flat and only has a surface area whereas a 3D shape is an object that has surface area and volume.
a flat pattern is when you take a 3D shape and you basically unfold and flatten the shape so it's in 2D
Curved and flat faces.
Sphere
A cuboid