If Δ ABC ~ Δ DEF, BC = 12cm, EF = 10...

Problema Solution

If Δ ABC ~ Δ DEF, BC = 12cm, EF = 10 cm, and AC = 18 cm, find DF.

BC : EF = AC : DF

12 : 10 = 18 : DF

DF = (10*18)/12

DF = 15 cm

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