Construct the figure ABCD as noted.
1. Draw AB.
2.Constmd BC so Mal BC : 를 ADB amd mEARC = 450
3. Construct CD and AD so that BC = AD and CD= AB.
4. Draw BD and AC and label the point of intersection E.
Identify a pair of triangles within figure ABCD that are congruent. Provide evidence to support your answer.
