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# Chp 10 Vocab

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

Circle | is the locus or set of all points |

Center | a given point in a circle which all other points are equidistant |

radius | is a segment with endpoints at the center and on the circle |

chord | a segment with endpoints on the circle |

diameter | of a circle is a chord that passes through the center and is made up of collinear radii |

Congruent circles | two circles that are the congruent if and only they have the same radius |

concentric circles | are coplanar circles that have the same center |

circumference | of a circle is the distance around the circle |

pi | ratio c over d as an irrational number |

inscribed | in a circle if all of a polygons vertices lie on the circle |

circumscribed | a circle is circumscribed about a polygon if it contains all the vertices of the polygon |

central angle | of a circle is an angle with a vertex in the center of the circle |

arc | is a portion of a circle defined by two endpoints |

minor arc | is the shortest arc connecting two endpoints on a circle |

major arc | is the longest arc connecting two endpoints on a circle |

semi circle | is an arc with endpoints that lie on a diameter |

congruent arcs | are arcs in the same or congruent circles that have the same measure |

Adjacent arcs | are arcs in a circle that have exactly one point in common |

arc lenght | is the distance between the endpoints along an arc measured in linear units |

inscribed angle | has a vertex on a circle and and sides that contain chords of the circle |

intercepted arc | has endpoints on the sides of an inscribed angle and lies in the interior of the inscribed angle |

Tangent | is a line in the same plane as a circle that intersects the circle at one point |

point of tangency | the point that the tangent intersects |

common tangent | is a line, ray, or segment that is a tangent to two circles in the same plane |

secant | is a line that intersects at two points |

chord segments | when two chords intersect inside a circle each chord is divided into two pieces |

secant segment | is a segment of secant line that has exactly one end point on the circle |

external secant segment | a secant segment lies in the exterior of the circle |

tangent segment | segement of a tangent with one end point on the circle |

compound locus | satisfies more than one distinct set of conditions |

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BB2424