# Transformations

### Three of the most important transformations are:

Rotation | Turn! | |
---|---|---|

Reflection | Flip! | |

Translation | Slide! |

After any of those transformations (turn, flip or slide), the shape still has

**the same size**,**area**,**angles**and**line lengths.**## Resizing

The other important Transformation is **Resizing** (also called *dilation, contraction, compression, enlargement* or even *expansion*). The shape becomes bigger or smaller:

Resizing |
---|

## Congruent or Similar

When one shape can become another using **only **Turns, Flips and/or Slides, then the two shapes are **Congruent**

When a **Resize** is neeeded for one shape to become another (we may also Turn, Flip and/or Slide) the two shapes are **Similar**

In other words:

When one shape becomes another ... | The shapes are ... | |||
---|---|---|---|---|

... using only Rotate, Reflect and/or Translate |
## Congruent |
|||

... using a Resize (may also Rotate, Reflectand/or Translate) |
## Similar |