Paper Square Pyramids
The square pyramid is made of a square base and 4 equilateral triangeles.
The model of the Cheops pyramid (also known as the Pyramid of Khufu or Great Pyramid of Giza) is a 1:2000 scale model.
Square Pyramid:
Number of faces: 5
Number of edges: 8
Number of vertices: 5
Cheops Pyramid:
Number of faces: 5
Number of edges: 8
Number of vertices: 5
Definition of a Pyramid: A pyramid is a polyhedron with one face (known as the "base") a polygon and all the other faces triangles meeting at a common polygon vertex (known as the "apex"). A right pyramid is a pyramid for which the line joining the centroid of the base and the apex is perpendicular to the base. A regular pyramid is a right pyramid whose base is a regular polygon. An n-gonal regular pyramid (denoted Yn) having equilateral triangles as sides is possible only for n=3, 4, 5. These correspond to the tetrahedron, square pyramid, and pentagonal pyramid, respectively.
