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# Geometry - Ch. #3

### Ch. #3

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

(3.1) 2 par. lines cut by a trans. make 2 corr. angles cong. | (3.1) 2 par. lines cut by a trans. make 2 corr. angles cong. |

(3.1) 2 par. lines cut by a trans. make 2 alt. int. angles cong. | (3.1) 2 par. lines cut by a trans. make 2 alt. int. angles cong. |

(3.1) 2 par. lines cut by a trans. make 2 s. s. int. angles supp. | (3.1) 2 par. lines cut by a trans. make 2 s. s. int. angles supp. |

(3.1) 2 par. lines cut by a trans. make 2 alt. ext. angles cong. | (3.1) 2 par. lines cut by a trans. make 2 alt. ext. angles cong. |

(3.2) 2 par. lines cut by a trans. make 2 s. s. ext. angles supp. | (3.2) 2 par. lines cut by a trans. make 2 s. s. ext. angles supp. |

(3.3) The sum of the measures of the angles of a triangle equals | 180 degrees |

(3.3) Equilateral triangle | all sides cong. |

(3.3) Isosceles triangle | 2 sides cong. |

(3.3) Scalene triangle | no sides cong. |

(3.3) Equiangular triangle | all angles cong. |

(3.3) Right triangle | one right angle |

(3.3) Acute triangle | all angles less than 90 degrees |

(3.3) Obtuse triangle | one obtuse angle (90 to 180 degrees) |

(3.4) Definition of a polygon | -closed shape with at least 3 sides -sides of a polygon intersect only at endpoints -do not cross |

(3.4) Definition of a regular polygon | -both equilateral and equiangular (all sides and angles are cong.) |

(3.4) Equation to find interior angles measurements for polygons | (n-2)180 |

(3.4) Exterior of polygons equal | 360 degrees |

(3.5) Slope formula | m= y2-y1 ------- x2-x1 |

(3.5) Point-Slope Form | y-k=m(x-h) |

(3.5) Slope-Intercept Form | y=mx+b |

(3.5) Standard Form | ax+by=c |

(3.6) Properties of par. lines | -same slope -same plane -do not intersect |

(3.6) Properties of perp. lines | -same plane -do not intersect -form a right angle -opposite reciprocal slopes |

(3.6) Horizontal lines slope | 0/1 (=0) |

(3.6) Vertical lines slope | 1/0 (undefined slope/cannot divide by 0) |

Created by:
mma129