- Congruency and SimilarityCongruency and Similarity SSSCongruency and Similarity SASCongruency and Similarity ASA or AAS or SAACongruency SSA or ASSGeometry - Angles at a Point - Opposite Angles are EqualGeometry -Line crossing a pair of Parallel Lines - F RuleGeometry -Line crossing a pair of Parallel Lines - Z RuleProperties of Similar TrianglesMAT091 Unit 4 Ratio and Scale Factor