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# Geometry Chapter 6

### McDougal Littell Vocab.

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

A plane figure that meets the following two conditions. (1) It is formed be three or more segments colled sides, such that no two sides with a common endpoint are collinear. (2) Each side intersects exactly two other sides, one at each endpoint. | polygon |

Three of more segmens, no two sides with a common endpoint are collinear. | sides of a polygon |

Each endpoint of a side of a polygon. | vertex of a polygon |

A polygon such that no line containing a side of the polygon contains a point in the interior of the polygon. | convex polygon |

A polygon such that a line containing a side of the polygon contains a point in the interior of the polygon. | concave polygon |

A polygon with all of its sides congruent. | equilateral polygon |

A polygon with all of its interior angles congruent. | equiangular polygon |

A polygon that is equilateral and equiangular. | regular polygon |

A segment that joins two nonconsecutive vertices of a polygon. | diagonal of a polygon |

A quadrilateral with both pairs of opposite sides parallel. | parallelogram |

A parallelogram with four congruent sides. | rhombus |

A parallelogram with four right angles. | rectangle |

A parallelogram with four congruent sides and four right angles. | square |

A quadrilateral with exactly one pair of parallel sides, called bases. | trapezoid |

Quadrilateral with exactly one pair of parallel sides. | bases of a trapezoid |

The two angles that contain the base of an isosceles triangle. | base angles of trapezoid |

Nonparallel sides of a trapezoid. | legs of a trapezoid |

A trapezoid with congruent legs. | isosceles trapezoid |

A segment that connects the midpoints of the legs of a trapezoid. | midsegment of a trapezoid |

A quadrilateral that has ttwo pairs of consecutive congruent sides, but in which opposite sides are not congruent. | kite |

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