Answer:
Each side. (or the Diagonals)
Step-by-step explanation:
Each segment would be congruent to each other, due to the CPCTC, or corresponding parts of congruent triangles are congruent. If the two triangles are right triangles, the base would be the same length as the base of the second triangle. The same applies to the hypotenuse and the leg of each triangle. Along with that, it could also be the Diagonals of each triangle.
