The diagonals of a parallelogram bisect each other can be proven using the concept of congruent triangles. By demonstrating the congruence of triangles formed by the diagonals, it is shown that each diagonal is divided into equal segments. Therefore, the correct choice is congruent triangles .
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The diagonals of a parallelogram bisect each other can be proven using the concept of congruent triangles . By showing that two triangles formed by the diagonals are congruent through the Angle-Side-Angle criteria, we conclude that each diagonal is bisected. Therefore, the correct choice in this context is congruent triangles . ;