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# Geometry: Chapter 6

### 49097 - Circle Terms

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

chord | segment with endpoints on the circle |

circle | set of points in a plane that are equidistant to a given point |

radius | segment with one endpoint on center of circle and one endpoint on circle |

diameter | a chord that passes through the center of the circle |

tangent | line that intersects the circle at one point |

minor arc | an arc smaller than a semicircle |

semicircle | an arc that measures 180 degrees |

arc | part of a circle |

major arc | an arc greater than a semicircle |

congruent circles | circles with the same sized radius |

concentric circles | non-congruent circles that share the same center |

central angle | angle that has its vertex at the center of the circle |

inscribed circle | angle that has its vertex on the circle and its sides are chords |

CHORD CENTRAL ANGLES CONJECTURE | If two chords in a circle are congruent, then they determine two central angles that are congruent. |

CHORD ARCS CONJECTURE | If two chords in a circle are congruent, then their intercepted arcs are congruent. |

PERPENDICULAR TO A CHORD CONJECTURE | The perpendicular from the center of a circle to a chord is the bisector of the chord. |

CHORD DISTANCE TO CENTER CONJECTURE | Two congruent chords in a circle are equididstant from the center of the circle. |

PERPENDICULAR BISECTOR OF A CHORD CONJECTURE | The perpendicular bisector of a chord passes through the center of the circle. |

TANGENT CONJECTURE | A tangent to a circle is perpendicular to the radius drawn to the point of tangency. |

TANGENT SEGMENTS CONJECTURE | Tangent segments to a circle from a point outside the circle are congruent. |

tangent circles | circles that are tangent to the same line at the same point |

Created by:
lbosel