The "shark" model

vertices: 2560
normals: 3171
holes : --
handles: --
components: 1
groups: 7
triangles: 188
quadrangles: 2253
pentagons: 83
hexagons: 29
heptagons: 1
octagons: 6
decagons: 2

The polygon mesh with colour-coded group structures.

Here with the triangles in the mesh shown in red.

Martin Isenburg@cs.unc.edu