Based on the provided information that \( \angle HGI \cong \angle JGI \) and \( \angle GIH \cong \angle GIJ \), you can conclude that the two triangles \( HGI \) and \( JGI \) are similar.
Considering the congruence of the angles, it follows that there are corresponding sides that can be stated as congruent based on those angles.
The most appropriate additional congruence statement you can make from the options provided would be \( HI \cong JI \).
Thus, the answer is:
HI¯¯¯¯¯¯¯ ≅ JI¯¯¯¯¯¯