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# Geometry Vocabulary

### Math- Chapter 10

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

angle | formed by 2 lines with a common endpoint |

vertex | the point were two sides or line meet |

exterior | on the outside of an angle |

interior | on the inside of an angle |

protractor | a tool used to measure angles |

degrees | the symbol used to write the measurement of an angle |

acute angle | an angle measuring less than 90 degrees |

right angle | an angle measuring exactly 90 degrees |

obtuse angle | an angle measuring more than 90 degrees, but less than 180 degrees |

polygon | closed plane figures made up of line segments called sides |

congruent polygons | exactly the same size and shape |

corresponding parts | matching sides or angles |

similar polygons | have the same shape |

scalene triangle | triangle with no sides congruent |

isosceles triangle | triangle with 2 sides congruent |

equilateral triangle | all sides of the triangle are congruent |

acute triangle | triangle with 3 acute angles |

right triangle | triangle with 1 right angle and 2 acute angles |

obtuse triangle | a triangle with 1 obtuse angle and 2 acute angles |

quadrilateral | a 4 sided polygon |

straight angle | an angle measuring exactly 180 degrees |

Created by:
Rjohnson11