a polyhedron * * * * * That is only if it is bounded by plane faces. A sphere, for example, is a three dimensional shape but is not a polyhedron: it is a solid shape.
A 2 dimensional shape such as a circle is NOT a solid shape, while a sphere is.
Sphere
a circle!
It is a volume (3D) shape - "solid" has nothing to do with it.
Since a sphere is round it is a shape without a face.
a polyhedron * * * * * That is only if it is bounded by plane faces. A sphere, for example, is a three dimensional shape but is not a polyhedron: it is a solid shape.
it is a plane shape because you said its a square
A 2 dimensional shape such as a circle is NOT a solid shape, while a sphere is.
sphere
A plane shape.
Sphere
A hexagon is a 6-sided plane shape (polygon). A hexahedron is a 6 -sided solid shape.
a circle!
It is a volume (3D) shape - "solid" has nothing to do with it.
It is a plane.
It has a curved surface.