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Add the number of faces of the shape to the number of vertices, and then subtract 2 to give you the number of edges.

This works for most polyhedrons.

I hope I have helped :)

ALSO, take the number of vertices, divide that by two, then add that answer to the number of vertices... that will give you the number of edges unless it is a pyramid.

Here is one that is GURANTEED TO WORK BECAUSE I HAVE TRIED IT. Here is is: Edge= 2 times(Vertice-1)

Q: What is the relationship among faces and vertices and edges?

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A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.

Their relationship is modelled by the equation F + V = E + 2, where F is the number of faces, V is the number of vertices, and E is the number of edges.

2 faces, 4 edges, and 4 vertices 2 faces, 4 edges, and 4 vertices

Faces: 6Vertices [or corners]: 8Edges: 12eight.

The Euler characteristic for simply connected polyhedra isF + V = E + 2 where F = # faces, V = # vertices and E = # edges.

Related questions

If you add the vertices and Faces and subtract 2 from that number you get the number of edges. Vertices+Faces=Edges+2

A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.

A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.

Topology.

Their relationship is modelled by the equation F + V = E + 2, where F is the number of faces, V is the number of vertices, and E is the number of edges.

2 faces, 4 edges, and 4 vertices 2 faces, 4 edges, and 4 vertices

4 faces, 6 edges, 4 verticesFour faces, six edges and four vertices.

It has 14 Faces, 24 Edges, and 12 Vertices

Faces: 10 Vertices: 16 Edges: 24

6 faces, 12 edges and 8 vertices.

Faces: 6Vertices [or corners]: 8Edges: 12eight.

The Euler characteristic for simply connected polyhedra isF + V = E + 2 where F = # faces, V = # vertices and E = # edges.