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# Stack #31052

Vocab. | Definitions |
---|---|

Ray | a straight line extending on in one direction forever |

Line segment | o portion of a line that has two end points. |

Line | a line that gose on forever in both directions |

Parallel Lines | two lines on the same plane that will never intersect |

congruent segments | angles with the same measures |

Perpendicular | two lines intersecting to form a right angle |

plane | a flat surface that extends forever |

collinear | points that lie on the same line |

coplanar | points and lines that lie on the same plane |

intersection lines | lines that meet at a point |

Angle | The figure formed by two lines diverging from a common point. |

vertex | The point at which the sides of an angle intersect |

acute angle | an angle less then 90° |

straight angle | an angle of 180° |

obtuse angle | an angle less then 180° but greater than 90° |

complementary angles | the sum of two angles put together is 90° |

congruent angles | angles with the smae measures |

vertical angles | Either of two angles formed by two intersecting lines and lying on opposite sides of the point of intersection. |

Adjacent angles | complementary angles share a common side and vertex. the sum of the two angles measures is 90° |

tranaversal | A line that intersects a system of other lines. |

Created by:
x30oColleen