points
9
1.5 0 0
1.5 5 0
1.0 5.5 0
0.5 5.5 0
0.0 5 0
# dot
1.3 -0.8 0
1.5 -1.0 0
1.7 -0.8 0
1.5 -0.6 0
end points
lines
8
0 1
1 2
2 3
3 4
# dot
5 6
6 7
7 8
8 5
end lines