Wire representation

 
                - Information loss:Object
                                                         Model
                                                            Representation

- Representation: Edge list

    - Edge: two pointers or indices, pointing at the extreme vertices

    - Vertex: its coordinates (x,y,z)

Is a non-ambiguous model if the purpose is to represent objects constructed with unidimensional structures (such as wires), but it is ambiguous if the purpose is to represent solids. See an example of
wires models, one of which may represent three different real objects, with different geometric properties (volume, etc).