# Paper Multi Side Base Pyramids

## Triangular Pyramid (v2):

Number of faces: 4

Number of edges: 6

Number of vertices: 4

## Square Pyramid (v2):

Number of faces: 5

Number of edges: 8

Number of vertices: 5

## Regular Pentagonal Pyramid:

Number of faces: 6

Number of edges: 10

Number of vertices: 6

## Pentagonal Pyramid (v2):

Number of faces: 6

Number of edges: 10

Number of vertices: 6

## Hexagonal Pyramid (v2):

Number of faces: 7

Number of edges: 12

Number of vertices: 7

## Lampshade Hexagonal Pyramid:

Number of faces: 7

Number of edges: 12

Number of vertices: 7

## Heptagonal Pyramid (v2):

Number of faces: 8

Number of edges: 14

Number of vertices: 8

## Octagonal Pyramid (v2):

Number of faces: 9

Number of edges: 16

Number of vertices: 9

## Enneagonal Pyramid (v2):

Number of faces: 10

Number of edges: 18

Number of vertices: 10

## Decagonal Pyramid (v2):

Number of faces: 11

Number of edges: 20

Number of vertices: 11

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.