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# Sanders Geometry Wor

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

Diagonal | a line that connects two vertices without redrawing a side. |

Convex Angle | An angle that extends or points outward. |

Supplementary Angle | Two angles that add up to 180 degrees. |

Concave Angle | An angle that extends or points inward. |

Complementary Angle | Two angles that add up to 90 degrees. |

vertex | The common endpoint of 2 rays that form an angle. |

degrees | The units that measure angles. |

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

Straight Angle | An angle with a measure of 180 degrees. |

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

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

Quadrilateral | A polygon with four sides. |

Hexagon | A polygon with six sides. |

Equilateral Triangle | A triangle with sides equal in length. |

Triangle | A polygon with three sides and angles that measure 180 degrees. |

Pentagon | A polygon with five sides and angles that measure 540 degrees. |

Octagon | A polygon with eight sides and angles that measure 1,080 degrees. |

Scalene Triangle | A triangle with no sides equal in length. |

Acute Triangle | All three angles of the triangle are acute angles. |

Parallelogram | A quadrilateral with both sets of opposite sides parallel and equal in length. |

Isosceles Triangle | A triangle with at least two sides of equal length. |

Right Triangle | One angle of the triangle is a right angle. |

Obtuse Triangle | One angle of the triangle is a an obtuse angle. |

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

Rectangle | A parallelogram with four right angles, but the sides are not all the same length. |

Rhombus | A parallelogram with all sides the same length. (Can also be a square, but not ALWAYS) |

Square | A quadrilateral with all sides the same length and always has four 90 degree angles. (Diagonals are perpendicular) |

Plane | An endless flat surface. |

Acute Angle | An angle with a measure between 0 and 90 degrees. |

Obtuse Angle | An angle with a measure between 90 and 180 degrees. |

Line Segment | A part of a line with two endpoints. |

Angle | Formed by two rays with the same endpoint. |

Right Angle | An angle with a measure of 90 degrees. |

Parallel Lines | Lines that never ever, ever, ever touch. |

Perpendicular Lines | Lines that meet at a 90 degree angle. |

Intersecting Lines | Line that come together at the same point. |

Created by:
rsanders