def remote_bifurcation_angle(bif_point):
assert len(bif_point.children) == <NUM_LIT:2>, '<STR_LIT>'<EOL>return morphmath.angle_3points(bif_point.points[-<NUM_LIT:1>],<EOL>bif_point.children[<NUM_LIT:0>].points[-<NUM_LIT:1>],<EOL>bif_point.children[<NUM_LIT:1>].points[-<NUM_LIT:1>])<EOL>
Return the opening angle between two out-going sections
    in a bifurcation point

    We first ensure that the input point has only two children.

    The angle is defined as between the bifurcation point and the
    last points in the out-going sections.