Question

what additional information is needed to prove the triangles are congruent by the side-Angle-side postulate ?

Answer 1

In this case, we'll have to carry out several steps to find the solution.

Step 01:

SAS = side-angle-side postulate

Triangle 1

side = ED

angle = ∠ D

side = DF

Triangle

side = ML

angle = ∠ L

side = LN

The answer is:

DF = LN