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# Polygon vocab 5

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

attribute | properties of a shape; definition of a shape |

polygon | closed plane figure with straight edges that are line segments |

regular polygon | polygon where all the sides are the same length |

2-Dimensional | plane figure that lies on a flat surface |

open figure vs. closed figure | figure in which 2 rays or line segments are not connected with a point vs. figure in which all rays and segments are connected with a point |

triangle | 3 sides; 3 angles (sum 180) |

quadrilateral | 4 sides; 4 angles (sum 360) |

pentagon | 5 sides; 5 angles (sum 540) |

hexagon | 6 sides; 6 angles (sum 720) |

octagon | 8 sides; 8 angles (sum 1,080) |

circle | not a polygon, round edges |

half circle | part of a circle with a straight edge |

right triangle | 3 sides with 1 right angle, 2 acute angles |

acute triangle | 3 sides with 3 acute angles |

obtuse triangle | 3 sides with 1 obtuse angle, 2 acute angles |

scalene triangle | 3 sides with none equal |

isosceles triangle | 3 sides with only 2 equal |

equilateral triangle | 3 equal sides |

square | 4 equal sides, 4 right angles, 2 pairs parallel sides |

rectangle | 2 pairs equal sides, 2 pairs parallel sides, 4 right angles |

rhombus/rhombi | 4 equal sides, 2 pairs parallel sides |

parallelogram | 2 pairs equal sides, 2 pairs parallel sides |

trapezoid | 2 right, 1 acute, and 1 obtuse angle, 1 pair parallel sides…OR… 2 acute and 2 obtuse angles, 1 pair parallel sides |

congruent | plane figures with the same shape and same size |

category | a group of objects that are the same type |

subcategory | a more specific group of objects that are the same type within a category |

classify | to arrange, organize, or order objects that have similar attributes or characteristics (similar to category) |

partition | to divide or separate into parts or sections |

hierarchy | series of ordered groupings within a system |

Created by:
crstone