congruence

noun

1. the state or quality of being in agreement; correspondence; harmony
2. Geom. the property of a plane or solid figure whereby it coincides with another plane or solid figure after it is moved, rotated, or flipped over
3. Math. the relation between two integers each of which, when divided by a third (called the modulus), leaves the same remainder

Origin: ME < L congruentia: see congruent