A ploygon has a perimeter that measures 12 units.
When dilated, its perimeter becomes 8. The scale factor of dilation is k, therefore, we would have;
[tex]\begin{gathered} \text{Measure x scale factor=New measure} \\ 12\times k=8 \\ \text{Divide both sides by 12, and you'll have} \\ \frac{12\times k}{12}=\frac{8}{12} \\ k=\frac{2}{3} \end{gathered}[/tex]The scale factor is 2/3. The correct answer is option A
