# Transformations

### These are Transformations:

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**.

Two shapes are **Similar** when we need to **Resize** for one shape to become another (we may also Turn, Flip and/or Slide).

So, when one shape can become another using transformation, the two shapes might be Congruent or just Similar

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

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

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