Step-by-step explanation
We are asked to find the theorem that helps complete the proof that the triangle KGC is congruent to triangle FHE
Two triangles are congruent if they satisfy the 5 conditions of congruence. They are side-side-side (SSS), side-angle-side (SAS), angle-side-angle (ASA), angle-angle-side (AAS) and right angle-hypotenuse-side (RHS).
Thus, for the given question
They are congruent due to SAS
SAS: If two sides and the included angle of a triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.
Thus, option B is correct