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# math unit 4

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

ray | a part of a line that has one end piont |

angle | a figure formed by to rays or line segments with a common end point. |

line | a straight path that goes on forever in both directions. |

perpendicular | lines,line segments,or rays that from a right angle |

parallel | two lines that will never intersect |

oblique | lines that are not perpendicular or parallel |

intersect | to cut or divide by passing trough or across |

protrator | a tool to measure angles |

degree | a unit for measuring angles |

right angle | a 90 degree angle |

straight angle | a 180 degree angle |

supplementary angles | angles that the sum is 180 degrees |

complementary angles | angles that the sum is 90 degrees |

supplementary degrees | degrees that have a sum of 180 degrees |

complementary degrees | degrees that add up to 90 degrees |

polygon | a closed lined figure with straight sides |

congruent | exactly the same size a shape |

isosceles triangle | a triangle with at least 2 congruent sides |

equilateral triangle | a triangle with equal sides |

scalene triangle | a triangle with no equal sides |

acute angle | a angle less then 90 degrees |

obtuse angle | a angle bigger 90 dergees |

right angle | a 90 degree angle |

right trapeziod | a trapezoid with at least 1 right angle |

circle | a plain figure that forms a closed path. |

reflex angle | a angel great than 180 degrees |

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