3. Refer to the figure below, $DA \parallel EB \parallel FC$. DO as indicated D 9 E F t A 15 B C t 21 If DE = 9, AB = 15 and AC = 21, what is DF? DF =
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Since DA and EB are parallel, we can use the property of corresponding angles to determine that angle DAF is equal to angle EBF. Show more…
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