SOLUTION: Hello, I am not understanding how to find the answer for DF. If Δ ABC ~ Δ DEF, BC = 12cm, EF = 10 cm, and 8. A) 18 B) 21 C) 15 D) 17 AC = 18 cm, find DF.

Algebra ->  Triangles -> SOLUTION: Hello, I am not understanding how to find the answer for DF. If Δ ABC ~ Δ DEF, BC = 12cm, EF = 10 cm, and 8. A) 18 B) 21 C) 15 D) 17 AC = 18 cm, find DF.      Log On


   

Question 773067: Hello, I am not understanding how to find the answer for DF.
If Δ ABC ~ Δ DEF, BC = 12cm, EF = 10 cm, and 8. A) 18 B) 21 C) 15 D) 17
AC = 18 cm, find DF.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If Δ ABC ~ Δ DEF,
BC = 12cm,
EF = 10 cm,
and AC = 8.
----------------------
A) 18 B) 21 C) 15 D) 17
AC = 18 cm
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Proportion:
DF/AC = EF/BC
---
DF/18 = 10/12
----
DF = 18(10/12)
DF = 15
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Cheers,
Stan H.
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