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# Geometry Terms

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

line | A continuous extent of length. |

line segment | One part of a line. |

ray | The part of a straight line considered as originating at a point on the line and as extending in one direction from that point. |

vertex | The intersection point of two sides of a plane figure. |

point | A position in space. |

obtuse angle | An angle greater than 90 degrees but less than 180 degrees. |

acute angle | An angle less than 90 degrees but greater than 0 degrees. |

right angle | A 90 degree angle |

perpendicular line segments | Two line segments which cross to form 90 degree angles. |

parallel line segments | Line segments that do not intersect. |

equilateral triangle | A triangle with all sides equal and all angles equal. |

isosceles triangle | A triangle which has two sides equal. |

scalene triangle | A triangle having three unequal sides and angles. |

intersecting line segments | Line segments that cross each other. |

chord | The line segment between two points on a given curve. |

radius | A straight line extending from the center of a circle or sphere to the circumference or surface. |

diameter | A straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end. |

circle | A closed plane curve consisting of all points at a given distance from a point within it called the center. |

parallelogram | A quadrilateral having both pairs of opposite sides parallel to each other |

quadrilateral | A polygon with four sides |

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mlm1045