Teyla wants to find the distance, AB, across a river. She starts at point B, walks along the edge of the river for 94 feet, and marks point C. Then she walks 76 feet further and marks point D. She turns 90°, walks until her final location, and marks point E. Point E, point A, and point C are collinear. a) Can Teyla conclude that ABC and EDC are similar? _

If so, which triangle similarity theorem/postulate can she use? _

b) Suppose DE = 103 feet. Calculate the distance of AB to the nearest tenth of a foot. Show your work. Don't forget to label your answer.

Work:

AB = _​