If two triangles are congruent, the number of pairs of corresponding parts is
A triangle has three sides and three angles. Hence, if two triangles are congruent, they have six pairs of corresponding parts.
In two triangles; if a pair of corresponding angles and a side are equal, then the triangles are necessarily congruent.
In two triangles; if a pair of corresponding angles and a ___ are equal, then the triangles are necessarily congruent.
A rough sketch of two triangles is drawn. They have three pairs of congruent parts, but still, the triangles are not congruent.