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OpenStudy (anonymous):
If DE=9, EF=7, and Ab=4.5, Find BC?
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OpenStudy (anonymous):
|dw:1334856508461:dw|
OpenStudy (anonymous):
do we know if the triangles are similar?
OpenStudy (anonymous):
They are.
OpenStudy (anonymous):
3.5
OpenStudy (anonymous):
ok, well the ratios of lengths will be the same, so AB:DE = BC:EF = 1:2 so BC is half of EF so half of 7 is 3.5
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