# diameter

The diameter of a circle or a sphere is the length of the segment joining a point with the one symmetrical respect to the center. That is, the length of the longest segment joining a pair of points.

Also, we call any of these segments themselves a diameter. So, in the next picture, $AB$ is a diameter.

The diameter is equal to twice the radius.

Title | diameter |
---|---|

Canonical name | Diameter1 |

Date of creation | 2013-03-22 12:20:42 |

Last modified on | 2013-03-22 12:20:42 |

Owner | drini (3) |

Last modified by | drini (3) |

Numerical id | 20 |

Author | drini (3) |

Entry type | Definition |

Classification | msc 51-00 |

Related topic | Radius |

Related topic | VolumeOfSphericalCapAndSphericalSector |