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# Geomtry

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

Line | A straight path of points that goes on forever in two directions. |

Ray | Part of a line that has one end point and extends forever in one direction. |

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

Intersecting Lines | Lines that pass through the same point. |

Perpendicular Lines | Two lines that intersect form square corners or right angles. |

Point | An exact location in space. |

Line segment | Part of a line having two end points. |

Plane | An endless flat surface. |

Angle | Two rays that have the same endpoint. |

Acute Angle | An angle whose measures is between 0˚ and 90˚ degrease. |

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 common endpoint of the two rays in an angle. |

Protractor | An instrument that is the result of multiplying two or more factors. |

Degrees | A unit of measure for angles and temperature. |

Polygon | A closed plane figure made up of line segments. |

Regular Polygon | A polygon that has sides of equal length and angles of equal measures. |

Triangle | A polygon with 3 sides. |

Quadrilateral | A polygon with 4 sides. |

Pentagon | A polygon with 5 sides. |

Hexagon | A polygon with 6 sides. |

Octagon | A polygon with 8 sides. |

Equilateral Triangle | A triangle whose sides all have the same length. |

Isosceles Triangle | A triangle with two sides are the same length. |

Scalene Triangle | A triangle which no sides are the same length. |

Right Triangle | A triangle which on angle is a right angle. |

Acute Triangle | A triangle whose angles are acute angles. |