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# SHMS 8th Math Vocab1

### SHMS 8th Grade Math Vocab 1

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

Alternate Exterior Angles | Congruent pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on opposite sides of the transversal and are outside the other two lines. |

Alternate Interior Angles | Congruent pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on opposite sides of the transversal and are in between the other two lines. |

Angle of Rotation | The degree of rotation about a fixed point. |

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

Corresponding Sides | Sides that have the same relative positions in geometric figures. |

Corresponding Angles | Congruent angles that have the same relative positions in geometric figures. |

Dilation | Transformation that changes the size of a figure, but not the shape. |

Linear Pair | Adjacent, supplementary angles. Excluding their common side, they form a straight line. |

Reflection | A transformation that "flips" a figure. |

Rotation | A transformation that turns a figure about a fixed point through a given angle and a given direction. |

Same-Side Interior Angles | Supplementary pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on the same side of the transversal and are between the other two lines. |

Same-Side Exterior Angles | Supplementary pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on the same side of the transversal and are outside the other two lines. |

Scale Factor | The ratio of any two corresponding lengths of the sides of two similar figures. |

Similar Figures | Figures that have the same shape but not necessarily the same size. |

Transformation | The mapping, or movement, of all the points of a figure in a plane according to a common operation. |

Translation | A transformation that "slides" each point of a figure the same distance in the same direction. |

Transversal | A line that crosses two or more lines. |