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# SarahGeometryTerms

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

Point | Location in Space |

Line | Points connected in a straight path that goes on in both directions forever. |

Line Segment | A part of a line with two end points |

Ray | A part of a line with only one end point |

Parallel Lines | Two lines that never cross |

Intersecting Lines | Two lines that will cross at some point |

Perpendicular Lines | Two lines that for a right angle |

Angle | Two rays that share the same end point |

Vertex | A shared end point on an angle |

Right Angle | a 90 degree angle |

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

Acute Angle | An angle less than 90 degrees |

Straight Angle | An angle of exactly 180 degrees |

Triangle | A 3-sided polygon |

Right Triangle | A triangle that has a 90 degree angle |

Obtuse Triangle | A triangle that has one angle bigger than 90 degrees |

Acute Angle | A triangle that has all 3 sides less than 90 degrees. |

Scalene Triangle | A triangle where no sides are the same length |

Isosceles Triangle | A triangle where at least 2 sides are the same length |

Equilateral Triangle | A triangle with all 3 sides of equal length |

Polygon | A closed figure made with 3 or more line segments that may not overlap |

Congruent | Equal Measure |

Convex Polygon | All angles pointed outward |

Concave polygon | One or more angles pointed in "Caved in" |

Regular Polygon | Sides and angles are all congruent |

Decagon | 10-sided polygon |

undecagon | 11-sided polygon |

nonagon | 9-sided polygon |

octagon | 8-sided polygon |

heptagon | 7-sided polygon |

hexagon | 6-sided polygon |

Pentagon | 5-sided polygon |

quadrilateral | 4-sided polygon |

triangle | 3-sided polygon |

perplex angle | an angle larger than 180 degrees |

Created by:
sarahkcrow