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# JCMSMath Vocabulary

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

congruent | having exactly the same size and shape. |

diameter | A line segment that passes through the center of a circle and has endpoints on the circleand is twice the radius. |

line | a set of points that extends without end in two opposite directions. |

line segment | part of a line with a point at each end. |

midpoint | a point that is equal distance from the two endpoints of a line segment. |

parallel | lines, rays, or line segments that are the same distance apart and never meet. |

perpendicular | lines, rays, or line segments that meet at right angles. |

radius | A line segment from the center of a circle to any point on the circle and is one half the diameter. |

ray | A part of a line that has one endpoint and extends without end in one direction. |

acute triangle | a triangle with all angles measuring less than 90 degrees |

adjacent angles | Two angles that have a common vertex and one common side. |

area | The amount of surface inside a closed boundary and is measured in square units. |

complementary angles | Two angles whose measures have a sum of 90. |

horizontal | In a left right orientation; parallel to the horizon. |

Circle graph | a graph that uses sections of a circle to compare parts to a whole and parts to other parts |

perimeter | The distance around a closed 2-dimensional shape. |

supplementary angles | Two angles whose measures have a sum of 180. |

vertex | The point at which two line segments, lines or rays meet to form an angle. |

vertical | Upright; perpendicular to the horizon. |

circumference | the distance around a circle |

complement | all the ways that an event can not happen |

coordinates | the numbers of an ordered pair that locate a point on a coordinate graph |

exponent | the number that indicates how many times the base is used as a factor |

Created by:
jbcon149