Answer:
The scale of the smaller figure to the larger figure is;
[tex]5\colon6[/tex]Explanation:
Given the triangles in the attached image;
We want to find the ratio/scale of the smaller figure to the larger figure;
Using the corresponding sides of the smaller to the larger.
[tex]\begin{gathered} 15\colon18 \\ \text{divide both sides by 3;} \\ \frac{15}{3}\colon\frac{18}{3} \\ 5\colon6 \end{gathered}[/tex]Therefore, the scale of the smaller figure to the larger figure is;
[tex]5\colon6[/tex]