What information would you need in order to prove two triangles are similar using the SAS Similarity Theorem?

To prove two triangles are similar using the SAS Similarity Theorem, you need to establish that two sides of one triangle are proportional to two sides of the other triangle, and that the included angle between those two sides is congruent. Specifically, if triangle ABC and triangle DEF are given, you would demonstrate that ( \frac{AB}{DE} = \frac{AC}{DF} ) and that angle ( \angle A ) is congruent to angle ( \angle D ). This combination of proportional sides and congruent angle confirms their similarity.