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# Ch 6: Polygons

### Vocabulary Words

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

regular polygon | A(n) __ is a polygon that is equilateral and equiangular. |

parallelogram | A quadrilateral with two pairs of opposite, parallel sides is known as __. |

consecutive angles | __ are angles that share a side. |

diagonal | A segment that connects 2 nonconsecutive vertices is called a(n) __. |

rhombus | A(n) __ is a quadrilateral with 4 congruent sides. |

convex | When no diagonal lies in the exterior of a polygon, the polygon is said to be __. |

polygon | __ is a closed plane figure formed by 3 or more segments that intersect only at its endpoints. |

concave | When a diagonal lies in the exterior of a polygon, the polygon is said to be __. |

midsegment of a trap,. | A segment that joins the midpoints of the legs is called a(n) __. |

opposite sides | __ are sides that do not share a vertex. |

Trapezoid | A(n) __ is a quadrilateral with 1 pair of parallel sides. |

Bases of a trapezoid | __ are the parallel sides in a trapezoid. |

Base angles of a trap. | __ are the angles next to the parallel sides in a trapezoid. |

Equiangular triangle | A polygon with three congruent angles. |

isosceles trapezoid | A(n) __ is a quadrilateral with 1 pair of parallel sides and a pair of congruent sides. |

Kite | A(n) __ is a quadrilateral with 2 pairs of congruent sides. |

Legs of a Trap. | __ are the non-parallel sides in a trapezoid. |

Opposite angles | Angles that lie on either side of a diagonal. |

Rectangle | A(n) __ is a quadrilateral with 4 right angles. |

Square | A(n) __ is a quadrilateral with 4 congruent sides and 4 right angles. |

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llasseter