p1 = [0, 0 , 0]
p2 = [ .5, sqrt(3.0)/2.0 , 0]
p3 = [ 1.5, sqrt(3.0)/2.0, 0]
p4 = [ 2, 0, 0]
p5 = [ 1.5, -sqrt(3.0)/2.0, 0]
p6 = [ .5, -sqrt(3.0)/2.0, 0]
v1 = ep.createVertex p1
v2 = ep.createVertex p2
v3 = ep.createVertex p3
v4 = ep.createVertex p4
v5 = ep.createVertex p5
v6 = ep.createVertex p6