Many solid shapes could have 6 faces, but the most common such shape, with 6 equal faces, is the cube.
Pyramid - they have three sides and a base = four faces
Shape
A ten faced solid is a decahedron.
A tetrahedron.
A polyhedron (solid shape formed by plane faces) with four faces is called a tetrahedron.
There is no solid shape with exactly four squares and no other faces.
A pyramid BK
Triangular pyramid.
The solid shape that has one square face and four triangular faces is called a pyramid. If you were to have a shape that had four triangular faces and no square face, it would be called a triangular pyramid.
A polyhedron is a solid shape with four or more polygonal faces. A hexahedron is a solid shape with six polygonal faces and so is a particular type of polyhedron.
A solid with four faces for maths is a tetrahedron.
Since a cube has 6 faces, you would be looking for a solid shape with only 2 faces and no such solid exists.
Many solid shapes could have 6 faces, but the most common such shape, with 6 equal faces, is the cube.
6
A four-faced solid is called a tetrahedron.
There is no regular solid with 13 faces.