# Truncated Tetrahedron
# Data: Exact Mathematics
12 8 18
 1   1  -3
 3   1  -1
 1   3  -1
-1   1   3
-3   1   1
-1   3   1
 1  -1   3
 3  -1   1
 1  -3   1
-1  -1  -3
-3  -1  -1
-1  -3  -1
3 0 1 2
3 3 4 5
3 6 7 8
3 9 10 11
6 0 2 5 4 10 9
6 5 2 1 7 6 3
6 4 3 6 8 11 10
6 1 0 9 11 8 7
0 1
0 2
0 9
1 2
1 7
2 5
3 4
3 5
3 6
4 5
4 10
6 7
6 8
7 8
8 11
9 10
9 11
10 11