Figure A10.

A spatial, non-recurrent bifurcation GAEF with the dihedral angle β, i.e., the angle between the daughters’ half-plane and the plane formed by the parent segment and the line in the daughters’ plane perpendicular to the bisector of the intermediate angle ρ, coinciding with the Y-axis due to alignment of daughters’ bisector with the positive X-axis. The azimuth angle φ is taken from the daughters’ bisector to the projection of the parent segment in the plane of the daughter segments.