v 4 -3.28825 1.36972
v 4 -2.83856 0.476536
v -4 -2.83856 0.476536
v -4 -2.83856 0.476536
v -4 -3.28825 1.36972
v 4 -3.28825 1.36972
f 1 2 3
f 4 5 6