SOLUTION
Given the question in the image, the following are the solution steps to get the correct piece of information needed
Step 1: Define the SSS postulate
If the three sides of a triangle are congruent to the three sides of another triangle, then the two triangles are congruent. We can determine that the three sides of one triangle are congruent to three sides of another triangle, then the two triangles are congruent.
Step 2: Find the correct statement
From the image, the following can be seen:
![\begin{gathered} AB\cong ED\text{ (given)} \\ AC\cong FD(given) \\ BC\cong EF \\ By\text{ SSS postulate }ABC\cong DEF \end{gathered}]()
Hence, it can be deduced from above that the correct piece of information needed to use the SSS postulate is:
