On the inner line of the opening of the jaws, we constructed two straight lines, at the intersection of which the angle α of jaw opening was found (Fig. 1).
Tlhamalala ka tsela eo go tlola makgabaganyo a mabedi a ditsela.  Mo makgabaganyong a ditsela tšhikela kwa molemeng mo o tsenang kgoro ya pabalesego ya Ofisi ya Setheo (Kago C1).