code: def pts2mu3_tet(d, a, b, c):
      """Accept point coordinates for calling mu3tet"""
      return intvol.mu3_tet(*pts2dots(d, a, b, c))
  
imports: from itertools import combinations
  import numpy
  import numpy.linalg
  import pytest
  from numpy.testing import assert_almost_equal, assert_array_equal
  from ..None import intvol
label_desc: Use image node_id 8 for calling a global function with example usage: pts2mu3_tet(d, a, b, c) and returns: intvol