# python3 e2_halfspace_angles.py
collinear (sgn, sgn, -sgn): val = 0.6253166400
eps=0.100 v1,v2 split symmetrically    val = 0.6253058892
eps=0.100 v3 rotated                   val = 0.6253145115
eps=0.100 v1 rotated                   val = 0.6253133980
eps=0.200 v1,v2 split symmetrically    val = 0.6252752248
eps=0.200 v3 rotated                   val = 0.6253081857
eps=0.200 v1 rotated                   val = 0.6253038238
eps=0.300 v1,v2 split symmetrically    val = 0.6252291855
eps=0.300 v3 rotated                   val = 0.6252978398
eps=0.300 v1 rotated                   val = 0.6252883653
# python3 e2_halfspace_angles.py D
collinear (sgn, sgn, -sgn): val = 0.6253166400
eps=0.100  D12 ~ -4.3592e-04  D13 = D23 ~ -2.1302e-04
eps=0.050  D12 ~ -4.3718e-04  D13 = D23 ~ -2.1326e-04
Richardson: D12 = -4.3761e-04, D13 = D23 = -2.1334e-04
