Question

what's the different between congruent and congruence?

Answer 1

Answer:

Congruent figures have the same shape and size (informally) but possibly different points. Part of the confusion between "equal" and "congruent" probably comes from the fact that congruence is an equivalence relation. In other words, congruence satisfies many of the properties of equality.

Answer 2

the two figures (say triangles) are said to be congruent while this property is known as congruence