Final answer:
The extra information required to distinguish the fault plane from the auxiliary plane includes strike, dip, and fault slip direction.
Step-by-step explanation:
The extra information that is required to distinguish the fault plane from the auxiliary plane includes the strike, dip, and fault slip direction. Strike is the horizontal line formed by the intersection of the dipping bed with the surface, and it is always 90° from the dip direction. Dip is the measure of the steepest possible slope or inclination of the sedimentary layers. The fault slip direction refers to the direction in which the blocks on either side of the fault move, such as horizontal displacement in strike-slip faults or upward/downward motion in dip-slip faults.