Geometry

# Similar figures

Two figures are **similar** when the only difference between them is their size. Then, the corresponding segments are proportional. It means that we obtain each length in one of them by multiplying the corresponding length in the other one by a fixed number. This fixed number is called **similarity ratio**.

For example:

We actually use the similarity of figures in

**plans, maps and models**. Here the similarity ratio is called**scale**.Obra colocada bajo licencia Creative Commons Attribution Non-commercial Share Alike 3.0 License