To determine: Whether the triangle ABC and GHI are similar to each other. Given: Triangle ABC that is 75% of its corresponding side in triangle DEF. Triangle GHI that is 32% of its corresponding side in triangle DEF.

Calculation:
Since, ${\displaystyle \mathrm{△}ABC\sim \mathrm{△}DEF}$ then,
${\displaystyle \frac{AB}{DE}=\frac{BC}{EF}}$
${\displaystyle =\frac{AC}{DF}}$
Since, ${\displaystyle \mathrm{△}GHI\sim \mathrm{△}DEF}$ then,
${\displaystyle \frac{GH}{DE}=\frac{HI}{EF}}$
${\displaystyle =\frac{GI}{DF}}$
If all sides of the triangle are similar then, its angles are also similar to each other.
Then, the triangles ${\displaystyle \mathrm{△}ABC\sim \mathrm{△}GHI}$ since, the triangle ${\displaystyle \mathrm{△}DEF}$ is similar in both the triangle by SAS similarity.
Therefore, the triangle ABC and GHI are similar to each other by SAS similarity.