Verbal proof depends on the context in which it occurs. For instance, in Euclidean geometry it is essentially a translation of visual generic proofs for triangles and circles based on the pivotal notion of congruent triangles. It is not logical proof in the sense accepted in modern axiomatic mathematics. However, it does introduce the learner to a most important aspect of axiomatic proof, that of systematic organisation, proving theorems in order, so that each depends only on previously established theorems.