congruence

Meanings

1. 1
   noun

   agreement, correspondence, or consistency between things

   There was close congruence between the theory's predictions and the observations.

2. 2
   noun

   in geometry, the relation between figures having the same shape and size

   The proof establishes the congruence of the two triangles.

From Latin congruentia ("agreement, harmony"), from congruere ("to come together, agree"), formed from con- ("together") + a root meaning to meet. The geometric sense specializes the broader idea of exact correspondence.

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