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You want to find the width, AB, of a river. You walk along the edge of the river 100 ft and mark point C. Then you walk 22 ft further and mark point D. You turn 90° left and walk until your location, point A, and point C are collinear. You mark point E at this location, as shown. (a) Suppose DE = 42 ft. What can you conclude about the width of the river? Explain. Your explanation should include the approximate width and how you got this answer. (b) Can you conclude that △ 𝐴𝐵𝐶 and △ 𝐸𝐷𝐶 are similar? Why or why not? Math

Feb 8, 2021

#2
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I guess the picture should look something like this (not to scale!!):

where  $$\frac{AB}{100}=\frac{42}{22}$$

Feb 8, 2021