A rectangular prism is not considered a regular polyhedron because its faces are rectangles, which can vary in size and shape. A regular polyhedron, or Platonic solid, has congruent faces that are all the same shape and size. In the case of a rectangular prism, while it has six faces and is a three-dimensional shape, the faces can be different dimensions, making it irregular.
Since you use the term "faces" of a shape, you may be referring to polyhedra,which are three dimensional solids. There is no maximum number of faces a polyhedron can have. But for regular polyhedra (a special case where all faces are congruent regular polygons), the regular polyhedron with the most faces is the icosahedron, which has 20 faces, each of them an equilateral triangle. The most familiar regular polyhedron is the cube which has six square faces.
Six faces.
A regular tetrahedron (triangular pyramid).
A regular hexahedron (a.k.a.: a "cube") has six squarefaces.However "hexahedron" simply means "six faces", so a non-regular hexahedron could have faces of other shapes. For example:A triangular dipyramid has six triangular faces.A parallelepiped has six parallelogram faces.A triangular trapezohedron has six kite-shaped faces.A pentagonal pyramid has a pentagonal base, and five triangular sides.
A hexagon. (A six-sided shape) * * * * * A regular octahedron.
A rectangular prism is not considered a regular polyhedron because its faces are rectangles, which can vary in size and shape. A regular polyhedron, or Platonic solid, has congruent faces that are all the same shape and size. In the case of a rectangular prism, while it has six faces and is a three-dimensional shape, the faces can be different dimensions, making it irregular.
Since you use the term "faces" of a shape, you may be referring to polyhedra,which are three dimensional solids. There is no maximum number of faces a polyhedron can have. But for regular polyhedra (a special case where all faces are congruent regular polygons), the regular polyhedron with the most faces is the icosahedron, which has 20 faces, each of them an equilateral triangle. The most familiar regular polyhedron is the cube which has six square faces.
Six faces.
The solid shape/figure that has six rectangles as faces is called a rectangular prism. The general term for any shape with six faces, regardless of shape is a hexahedron.
The shape of the 12 faces of a regular dodecahedron are regular pentagons.
It is a dodecahedron - a shape with 12 faces which are regular pentagons.
cube
a hexagon
There is no regular solid with 13 faces.
A regular tetrahedron (triangular pyramid).
A Cuboid has 6 rectangular faces.