Question

If AABCDEF, what is the scale factor of ABC to ADEF?18AB2420O A.O-IN12OB. 10C. 10OD. 2C DE10F

Answer 1

Let:

k = Scale factor

From the figures we can conclude:

$\begin{gathered} k\cdot BC=EF \\ where: \\ BC=20 \\ EF=10 \\ so: \\ 20k=10 \\ k=\frac{10}{20} \\ k=\frac{1}{2} \end{gathered}$

Answer:

A. 1/2