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# Pre-Algebra Chap 1&2

### Pre-Algebra Chapter 1 & 2

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

Literal Equation | An equation that has two or more variables |

Congruent Figures | Figures that have the same size and the same shape |

Corresponding Angles | Matching angles of two congruent figures △ △ ABC DEF |

Corresponding Sides | Matching sides of two congruent figures |

Transformation | This changes a figure into another figure. |

Image | The new figure formed by a transformation |

Translation | A transformation in which a figure slides but does not turn; Every point of the figure moves the same distance and in the same direction. |

Reflection | A transformation in which a figure is reflected in a line called the line of reflection; A reflection creates a mirror image of the original figure. |

Line of Reflection | A line that a figure is reflected in to create a mirror image of the original figure |

Rotation | A transformation in which a figure is rotated about a point called the center of rotation; The number of degrees a figure rotates is the angle of rotation |

Center of Rotation | A point about which a figure is rotated |

Angle of Rotation | The number of degrees a figure rotates |

Similar Figures | Figures that have the same shape but not necessarily the same size; Two figures are similar when corresponding side lengths are proportional and corresponding angles are congruent. |

Dilation | A transformation in which a figure is made larger or smaller with respect to a fixed point called this |

Center of dilation | A point with respect to which a figure is dilated |

Scale Factor | The ratio of the side lengths of the image of a dilation to the corresponding side lengths of the original figure |

Created by:
jkuecker