Hunter1471
24.06.2019 •
Mathematics
Find the length of bc. δabc : δdef a. 6 b. 9 c. 9.5 d. 10
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Ответ:
The correct answer is option B. 9
Step-by-step explanation:
Let two triangles ΔABC and ΔDEF are similar.
The ratio of sides of similar triangle are equal.
AB ~ED , BC ~ EF and AC ~ DF
And AB/ED = BC/ EF = AC/DF
From the figure we get,
AB = 12
ED = 18
EF = 13.5
AB/ED = BC/ EF
12/18 = BC/13.5
BC = (12*13.5)/18 = 9
Therefore the correct answer is option B. 9
Ответ: