- Consider the following two triangles: \(ΔABD\) and \(ΔCDB\) are they congruent?
Why or why not? Mark the congruent parts.
- Are ΔACD and ΔDBA congruent? Why or why not? Mark the congruent parts. Remember that the opposite sides of a parallelogram are congruent and parallel. Also recall that the alternate interior angles formed by parallel lines cut by a transversal are congruent.
