If two figures are scale copies of each other, then the corresponding sides should have the same ratio.
Find the quotient of the sides of figure A to the corresponding sides of figure B. If they all have the same ratio, then figure B is a scale copy of figure A:
[tex]\begin{gathered} \frac{8}{4}=2 \\ \frac{4}{2}=2 \\ \frac{6}{3}=2 \\ \frac{2}{1}=2 \\ \frac{6}{3}=2 \end{gathered}[/tex]Since all the ratios are equal to 2, the answer is:
[tex]\text{Yes. Figure B is a scale copy of figure A.}[/tex]