Question

the two triangles created by the diagonal of the parallelogram are congruent. recall that the opposite sides of a parallelogram are congruent. which transformation(s) could map one triangle to the other? reflection translation reflection and translation rotation and translation

Explanation:

A reflection across the diagonal of the parallelogram can map one triangle to the other. A translation alone cannot map one triangle to the other as the orientation needs to be flipped. Rotation and translation together also won't work as the key is the reflection - like flipping over the diagonal.

Answer:

reflection