## Geometry: Common Core (15th Edition)

Find the corresponding side ratio. $\frac{15}{25}$=$\frac{3}{5}$ The ratio of the perimeters is equal to the ratio of the corresponding sides. $\frac{3}{5}$=$\frac{3}{5}$. This can be written as 3:5 as well. The ratio of the areas is equal to the square of the ratio of the corresponding sides. $\frac{3^{2}}{5^{2}}$=$\frac{9}{25}$. This can also be written as 9:25