Patamon's process of using a sequence of rigid transformations to show that one triangle can be mapped onto another, such that they overlap perfectly, suggests that the corresponding sides and angles of the triangles are congruent. Given that there is one pair of congruent angles between two pairs of congruent sides, this situation aligns with the SAS (Side-Angle-Side) Congruence Theorem.
Therefore, the correct answer is:
c. the sas congruence theorem