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# Geometry Vocabulary

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

Supplementary Angles | Two angles whose measures add up to 180 degrees |

Complementary Angles | Two angles whose measures add up to 90 degrees |

Straight Angle | An angle that measures exactly 180 degrees |

Vertex | The point of intersection of the two rays that form an angle, the common endpoint of an angle |

Adjacent Angles | Two angles share a common side and a common vertex |

Vertical Angles | Two non-adjacent angles formed by the intersection of two lines, opposite angles |

Congruent Angles | Same angle in degrees |

Acute Angle | An angle who is smaller than 90 degrees |

Obtuse Angle | An angle that is more than 90 degrees but less than 180 degrees |

Angle | the figure formed by 2 rays sharing a vertex |

Perpendicular Lines | 2 lines that meet at a right angle |

Right Angle | Angle who measures exactly 90 degrees |

Parallel Lines | 2 lines that don't meet |

Ray | Line with a single endpoint |

Segment | Part of a line that is bounded by 2 end points |

Transversal | A line that cuts across 2 or more lines |

Bisect | Dividing Line of 2 lines |

Corresponding | When 2 lines are crossed by another line, the angles of the matching corners |

Midpoint | The point on a line segment that divides it into 2 equal parts |