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# Transformations

### Essential Vocabulary for Unit 3

Term | Definition |
---|---|

Transformations | the movement of objects in a coordinate plane |

Translation | when you slide an object from one part of the coordinate plane to another |

Rotation | when you turn an object in the coordinate plane |

Reflection | when you flip or mirror an object in the coordinate plane |

Dilation | resizing a shape |

Scale Factor | tells you how much a figure is dilated by |

Vertices | the corners of an object |

Trasformation Sequence | the order of movements of an object in the coordinate plane |

Similar | one object is similar to the other if one can be obtained by a sequence of transformations to the other |

Side-Side-Side Similarity (SSS) | if ratios of the lengths of the three pairs of corresponding sides are equal, then the triangles are similar. |

Side-Angle-Side Similarity (SAS) | if the ratios of the lengths of two pairs of corresponding sides are equal and the corresponding angles between the sides are equal, then the triangles are similar. |

Angle-Angle Similarity (AA) | if two pairs of corresponding angles are equal, then the triangles are similar. |

Congruent | the same or equal |

Corresponding Angles | corresponding angles are a pair of matching angles that are in the same spot in two different shapes. |

Corresponding Sides | corresponding sides are a pair of matching sides that are in the same spot in two different shapes. |