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# Week One Geometry

### Geometry Terms

Question | Answer |
---|---|

*A location, shown as a dot. | points |

*A set of all points. | space |

*A long, thin continuous mark Types: straight, parallel, horizontal, vertical, intersecting, perpendicular, lines of symmetry, etc. | lines |

*Three or more points that lie on the same straight line. | collinear |

*A flat surface. | plane |

*Points that do not lie on the same line. | non-collinear |

* Geometric objects/figures that lie on the same plane | coplanar |

*Geometric objects/figures that do not lie on the same plane. | non-coplanar |

*To meet a some point, a common point or line. | intersect |

*The set of points consisting of two endpoints and all points in between the endpoints. | segment |

*A line that has a starting point, but it does not have an ending point. | ray |

*Two rays with a common endpoint that form a line. | opposite ray |

*The distance from one end to the other end *How long something is. |a-b| | length of a segment |

*Having the same shape and the same size Example: A cube has congruent faces. | congruent segments |

*The point in the middle of a line segment | midpoint of segment |

*To divide in two equal sections *To cut in half | bisector of a segment |

*If three points A, B, & C are collinear and B is between A and C, then AB+BC =AC. | segment addition postulate |

*Lines that do not lie in the same plane in space, so that they cannot be parallel or intersect. | skew |

*Lines that are the same distance apart at all points. They never intersect. | parallel |

*Lines that intersect at right angles to each other. | perpendicular |

Created by:
vickersm