#vertex 
5
0.000000 0.000000 0.000000 
1.000000 0.000000 0.000000 
1.000000 1.000000 0.000000 
0.000000 1.000000 0.000000 
0.500000 0.500000 1.600000 
#element_face
6
1 0 3 
1 3 2 
0 1 4 
0 4 3 
3 4 2 
1 2 4