Congruence
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As an abstract term, congruence means similarity between objects.
- In arithmetic and algebra, congruence refers to a congruence relation.
- In geometry, congruence refers to the equivalence of shapes. See congruence (geometry).
- In psychology and NLP, congruence could be defined as rapport within oneself, or internal and external consistency, perceived as sincerity.
- In cladistics, congruence is a test of homology, or shared, derived character states, in which the distributions of supposed homologies among taxa are compared for consistency.