# Angles

rename
Updated
2009-02-23 18:47

## Angles

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

Degree | A unit of measure: 360 of them make a full circle. |

Radian | A unit of measure: 2 pi of them make a full circle. |

Exterior Angle | An angle outside a polygon formed by two adjacent sides of the polygon. |

Interior Angle | An angle inside a polygon formed by two adjacent sides of the polygon. |

Exterior Angle | The Supplement of an Interior Angle. |

Interior Angle | The Supplement of an Exterior Angle. |

Line of Symmetry | A line about which a shape can be folded in half so that both halves overlap with one another. |

Line of Symmetry | If you put a mirror along this line, you can see the whole shape. |

Perpendicular Lines | Two lines that intersect in a right angle. |

Parallel Lines | Two lines that never intersect. |

Transversal | A line that intersects two or more lines. |

Vertex | A corner of a polygon. |

10 seconds on a clock | 60 degrees. |

1 minute on a clock | 6 degrees. |

1 hour on a clock | 30 degrees. |

L-Shaped Angle | 90 degrees. |

Right Angle | 90 degrees. |

Acute Angle | 0 to 90 degrees. |

Obtuse Angle | 90 to 180 degrees. |

Supplementary Angles | Total to 180 degrees. |

Complementary Angles | Total to 90 degrees. |

All Internal Angles of a Triangle | Total to 180 degrees. |

All External Angles of an n-sided Polygon | Total to 360 degrees. |

All Internal Angles of an n-sided Polygon | Total to 180 n - 360 degrees. |

Adjacent Angles | They share the same vertex and one side. |

Angles formed when 2 Lines Intersect | Supplementary if they are Adjacent, Identical otherwise. |

Please check these:

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

Straight line amount of degrees | 180. |

Adjacent Angles= | 180. |

Bench Marks | 90 and 180 degrees. |

Patterns | Adjacent =180 and diagonal are the same. |