- the state or quality of being in agreement; correspondence; harmony
- Geom.
- the property of a plane or solid figure whereby it coincides with another plane or solid figure as after being moved, rotated, or flipped over
- the property of having the same measure: said as of two lines or two angles

- Math. the relation between two integers each of which, when divided by a third (called the
*modulus*), leaves the same remainder

Origin of congruence

Middle English from Classical Latin*congruentia:*see congruent