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# Unit 4 (math).

### unit4

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

Ray | A part of a line that has no endpoint at the and extends without end in one direction. |

angle | a figure formed by 2 rays or lines. |

Line | Straight line that goes across. |

Perpendicular | Lines , line segments, or rays are perpendicular. |

parallel | two equal sides. |

oblique | Lines that's not parallel and not perpendicular. |

intersect | to cut or divide by passing through or across. |

protracter | a tool used to measure a angle. |

Degree | a unit or measureing angles. |

right angle | a 90% angle. |

straight angle | A line that goes on forever. |

suppementary angles | angles having a sun of 100 degrees |

complementary angles | angles have a sun of 90 degrees |

opposite angle | when two lines intersect, the angle form a opposite angle. |

vertical angle | pairs of opposite angles formed by intersecting lines are called vertical angles. Vertical angles have the same measure. |

Polygon | A figure bounded by straight lines. |

congruent | same size and shape. |

isosceles triangle | A triangle with two equal sides |

Equilateral | Refering to a polygon all of the sides are equal. |

scalene triangle | All of the sides diffrent lengths. |

acute triangle | A triangle that has all of the angles are acute |

obtuse triangle | A triangle thats one of the angles thats obtuse angle. |

Right triangle | A triangle with one right angle in it's indicator . |

right trapezoid | A quadrilateral with 2 parallel sides |

circle | a plane figure that forms a closed path so that all the points the path are the same distance from a point called the center. |

reflex angle | an angle greather than 180% |