Part 1: use transformations to prove congruency. given: ("cb" ) ̅ ∥ ("ed" ) ̅; ("cb" ) ̅≅ ("ed" ) ̅ prove: cbf ≅ edf using isometric (rigid) transformations. outline the necessary transformations to prove cbf ≅ edf using a paragraph proof. be sure to name specific sides or angles used in the transformation and any congruency statements