In accordance with Kirchhoff’s Law, the sum of the voltages recorded in aVR, aVL, and aVF is also equal to zero. When these leads are superimposed on the triaxial system, a hexaxial system is created with 12 equal angles of 30°. This allows the more precise localization of the electrical forces in the frontal plane. It should be noted that lead aVF is perpendicular to lead I, lead aVL is perpendicular to lead II and lead aVR is perpendicular to lead III.