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# Math Unit 6: Part 1

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

point | An exact location in space |

line | A straight path of points that goes on and on in two directions |

line segment | A part of a line that has two endpoints |

ray | A part of a line that has one endpoint and continues endlessly in one direction |

angle | A figure formed by two rays that have the same endpoint |

vertex | The point where two rays meet. The point where the sides of a polygon meet. The point where three or more edges of a solid figure meet |

right angle | An angle that forms a square corner |

acute angle | An angle that is less than a right angle |

obtuse angle | An angle that is greater than a right angle |

straight angle | An angle that forms a straight line |

parallel lines | In a plane, lines that never intersect |

intersecting lines | Lines that cross at one point |

perpendicular lines | Two intersecting lines that form right angles |

plane figure | A figure with only two dimensions |

solid figure | A figure that has length, width, and height |

edge | A line segment where two faces of a solid figure meet |

face | A flat surface of a solid that does not roll |

net | A pattern used to make a solid |

polygon | A closed plane figure made up of line segments |

side | Each of the line segments of a polygon |

triangle | A polygon with 3 sides |

quadrilateral | A polygon with 4 sides |

pentagon | A plane figure with 5 sides |

hexagon | A polygon with 6 sides |

octagon | A polygon with 8 sides |

Created by:
RSachs