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# geometry

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

line | a long narrow line or band |

ray | Part of a line that has one endpoint and extends forever in one direction |

parallel lines | In a plane,lines that never cross and stay the same distance apart. |

perpendicular lines | Two lines that intersect to form square corners or right angle |

point | An exact location in a space |

line segment | Part of a line that has two endpoints |

plane | An endless endpoint |

angle | Two ray that have the same endpoint |

acute angle | An angle whose measure is between 0* and 90* |

right angle | An angle whose measure is 90* |

obtuse angle | An angle whose measure is between 90* and 180* |

straight angle | An angle measuring 180* |

vertex | The point of a cone |

protractor | An instrument used to measure and draw angles |

degrees | A unit of measure for angles and temp |

polygon | A closed plane figure made up of line segments |

regular polygon | A polygon that has sides of equal length a angle of equal measure |

triangle | A polygon with three sides |

quadrilateral | A polygon with four sides |

pentagon | A polygon with five sides |

hexagon | A polygon with six sides |

octagon | A polygon with eight sides |

equilateral triangle | A triangle whose sides are all equal |

isosceles triangle | A triangle whose two sides are equal |

scalene triangle | A triangle whose no sides are equal |

right triangle | A triangle which one angle is a right angle |

acute triangle | A triangle whose measure is between 0* and 90* |

obtuse triangle | A triangle in which one angle is an obtuse angle |

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

trapezoid | A quadrilateral that has exactly one pair of parallel sides |

rectangle | A parallelogram with four right angles |

rhombus | A parallelogram that has sides the same length |

square | A rectangle with all sides the same length |

generalization | A general statement |

Created by:
17msowac