No.
A cube has six square faces.
Cube
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
Octohedron, or diamond
A solid with six congruent square faces is a cube.
No.
A cube has six square faces.
It depends on the shape of the face. Congruence is of no help in this respect.
A cube has three pairs of parallel faces and all faces are congruent.
A pentagonal prism
A solid figure with eight vertices and all faces of equal size is called a cube. Each face of a cube is a square, and a cube has 8 vertices and 6 faces.
triangular pyramid
Cube
A polyhedron.
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
No. All the faces of a Platonic solid are identical regular polygons.