The map of two walking trails in a nature preserve is shown on the grid below as the pre-image and image of a reflection of the north trail, (Triangle) ABC, over the x-axis onto (Triangle) ADC, the south trail. A ranger wants to prove that the two trails are congruent. Since it is known that AC = AC , what other pieces of information would be needed to show that (Triangle) ABC and (Triangle) ADC are congruent?

PLEASE HELP!!!