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# Geometry Topic 9

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

A straight path of points that goes on and on in two directions. | line |

Lines that cross at one point. | intersecting lines |

Two intersecting lines that form right angles. | Perpendicular lines |

In a plane, lines that never intersect. | Parallel lines |

An exact location in space. | Point |

An endless flat surface. | Plane |

A figure formed by two rays that have the same endpoint. | Angle |

An angle that is less than a right angle. | Acute angle |

An angle that is greater than a right angle. | Obtuse angle |

A part of a line that has two endpoints. | Line segment |

An anlge that forms a square corner. | Right angle |

A part of a line that has one endpoint and continues endlessly in one direction. | Ray |

An angle that forms a straight line. | Straight angle |

A tool used to measure and draw angles. | Protractor |

The measurement used for angles. | Degrees |

Each of the line segments of a polygon. | Side |

A polygon with six sides. | hexagon |

The point where two rays meet to form an angle. The point where the sides of the polygon meet. The point where three or more edges meet in a solid figure that does not roll. The pointed part of a cone. | Vertex (plural,vertices) |

A polygon with five sides. | Pentagon |

A polygon with eight sides. | Octagon |

A polygon with four sides. | Quadrilateral |

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

A polygon with three sides. | Triangle |

A triangle with three acute angles. | Acute triangle |

A triangle that has at least two equal sides. | Isosceles triangle |

A triangle in which all sides are the same length. | Equilateral triangle |

A triangle in which there is one right angle. | Right triangle |

A triangle in which there is one obtuse angle. | Obtuse triangle. |

A quadrilateral in which opposite sides are parallel. | Parallelogram |

A triangle in which no sides are the smae length. | Scalene triangle |

A quadrilateral in which opposite sides are parallel and all sides are the same length. | Rhombus |

A quadrilateral with four right angles. | Rectangle |

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

A quadrilateral with four right angles and all sides the same length. | Square |

Created by:
16ehlerss