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# Geometry Ch 1

### Geometry Ch 1 Vocab Review

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

* Formed by two noncollinear rays that have a common endpoint. | angle |

*Inside of an angle | Interior |

*Having the same measure. | congruent |

* An angle whose measure is between 0 and 90 | acute angle |

* A geometric tool used to draw circles and arcs | compass |

*Two angles that lie in the same plane, have a common vertex, a a common side but no interior points. | adjacent angles |

Points that lie on the same line. | colinear |

*Two angles whose measures have a sum of 90 | complementary angles |

* A ray that divides an angle into two congruent angles | angle bisector |

*The sum of the lengths of the sides of a polygon | perimeter |

* Made up of points and has no thickness or width | line |

*The point halfway between the endpoints of a segment | midpoint |

* An angle that measures greater than 90° and less than 180° | obtuse |

*Outside of an angle | Exterior |

* Lines that form right angles | perpendicular lines |

*A location in space | Point |

*Part of a line. Has 1 endpt, and extends indefinitely on one direction | ray |

* A flat surface made up of points | plane |

* An angle that measures 90° | right angle |

* A closed figure whose sides are all segments | polygon |

* A pair of adjacent angles whose noncommon sides are opposite rays | linear pair |

* A part of a line that consists of two endpoints | line segment |

* Two angles whose measures have a sum of 180 | supplementary |

* A unit of measure used in measuring angles and arcs | degree |

* Two nonadjacent angles formed by two intersecting lines | vertical angles |

* Any segment, line, or plane that intersects a segment at its midpoint | segment bisector |

* A polygon in which there are points contained in the interior of the polygon | concave polygon |

* A polygon in which no points are contained in the interior of the polygon | convex polygon |

Created by:
ang2lawson