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# chapter11 vocab.

### VOCABULARY

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

Adjacent Angles | Two angles that have the same vertex, share a common side, and do not overlap. |

circumference | The distance around a circle. |

Alternate Exterior | Non-Adjacent exterior angles found on opposite si9desof the traversal. |

Alternate interior | Non-Adjacent exterior angles found on opposite sides of the traversal. |

Congruent | line segments that have the same length,or angles that have the same measure or figures that have the same size and shape. |

Diameter | Distance across a circle |

Exterior angles | Four of the angles formed by the traversal and two parallel lines. Exterior angles lie outside the two parallel lines. |

perpendicular lines | lines that intersect to form a right angle. |

PI | The ratio of the circumference of a circle to the diameter of the circle. 3.14 |

Radius | The distance from the center to any point on the circle. |

Traversal | A line that intersects two parallel lines to form eight angles. |

Trapezoid | A quadrilateral with exactly one pair of parallel sides. |

Rhombus | A parallelogram with four congruent sides. |

Parallelogram | A quadrilateral with opposite sides parallel and congruent. |

complementary angles | Two angles are complementary if the sum of there measures are 90*. |

supplementary Angles | Two angles are supplementary if the sum of their measure is 180*. |

corresponding Angles | Angles that have the same position on two different parallel lines. Cut by traversal. |

Interior angles | Four of the angles formed by the traversal and two parallel lines. Interior angles lie between the two parallel lines. |

parallel lines | Lines that don't intersect |

polygon | A simple closed figure in a plane formed by three or more line segments. |

Quadrilateral | closed figure with four sides and four vertices. including squares, rectangles, and trapezoids. |

Rotation | A transformation where a figure is turned around a fixed point. Also called a turn. |

Vertical angles | Two pairs of opposite angles formed by two intersecting lines. The angles formed are congruent. |

Rectangle | A parallelogram with four right angles. |

square | a parallelogram with all sides congruent and four right angles. |

Created by:
victoria.ryker47