Respuesta :
A statement which is necessary to prove that the two (2) triangles are congruent by the SAS criterion is: C. BC = EF.
What is a triangle?
A triangle can be defined as a two-dimensional (2D) geometric shape that has three (3) sides, three (3) angles and three (3) vertices.
Based on the side, angle, side (SAS) criterion, a statement which is necessary to prove that the two (2) triangles are congruent is that side BC must be equal to side EF because angle ABC is equal to angle DFE.
Read more on congruency here: brainly.com/question/11844452
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