Suppose that you have △ S A N and △ C U T, and S A/C U = N S/T C. Grant claims that proving ∠ A ≅ ∠ U will help him to prove that △ S A N ∼△ C U T because of SAS Similarity Criterion. Penelope claims that S A/C U = A N/U T will help her to prove that △ S A N ∼△ C U T because of AA Similarity Criterion.