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# Howard Geometry 11

### Chapter 11 Geometry Vocabulary

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

Chord | A segment whose endpoints are points on a circle |

Secant | A line that intersects a circle in two points |

Tangent | A line in the plane of a circle that intersects the circle in exactly one point |

Point of Tangency | The point where the tangent line intersects the circle |

Tangent Segment | A segment in the plane of a circle that intersects the circle in exactly one point |

Minor Arc | Written by using two points and an arc symbol above; it is smaller than a semicircle. |

Major Arc | Written by using three points and an arc symbol above; it is larger than a semicircle. |

Measure of a Minor Arc | Less than 180 degrees. |

Measure of a Major Arc | Greater than 180 degrees. |

Semicircle | The arc whose endpoints are a diameter; its measure is exactly 180 degrees |

Congruent Circles | Two circles with the same radius. |

Arc Length | A portion of the circumference of a circle. |

Inscribed Angle | An angle whose vertex is on a circle and whose sides contain chords of the circle |

Intercepted Arc | The arc that lies in the interior of an inscribed angle and has endpoints on the angle. |

Central Angle | An angle whose vertex is at the center of a circle and whose sides are radii |

Inscribed Polygon | A polygon whose vertices lie on a circle |

Circumscribed | To draw a circle around a polygon such that the circle intersects all vertices of the polygon. |

Vertex | The point where two sides of a polygon or angle intersect |

Measure of a Semicircle | Exactly 180 degrees. |