3 3 1 GtsSurface GtsNFace GtsNEdge GtsNVertex
0 0 1 A
0.045944 1.43664e-16 0.998944 B
0.0141975 0.0436953 0.998944 C
1 2 AB
2 3 BC
1 3 AC
1 2 3 ABC
