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# section 3.3

### geometrystuff

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

Alternate Interior Angles | |

Theorem; If two lines intersect to form a linear pair of congruent angles, then the lines are_______ | perpendicular |

Theorem; If two sides of two adjacent acute angles are perpendicular, then they are _____. | complementary |

Theorem; If 2 lines are perpendicular, then they form ___ ___ _____. | 4 right angles |

If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are ______ | congruent, alternate exterior angles theorem |

if two parallel lines are cut by a transversal, then the pairs of alternate interior angles are ______. | congruent, alternate interior angles theorem |

If two parallel lines are cut off by a transveral, then the two consecutive interior angles are______. | supplementary, Consecutive Interior Angles theorem |

if two parallel lines are cut by a transveral, then the corresponding pairs of corresponding angles are ______. | congruent, corresponding angles postulate |

If the transversal is perpendicular to one the two parallel lines, then it is perpendicular to the other. | Perpendicular transversal theorem. |

If two lines are cut by a transversal so that alternate exterior angles are ____, then the lines are _________. | congruent, parallel, alternate exterior angles Converse |

If two lines are cut by a transversal so that alternate interior angles are _____, then the lines are ______. | congruent, parallel, alternate interior angles converse |

If 2 lines are cut by a transversal so that consecutive angles are _______, then the lines are _______. | supplementary, parallel, consecutive interior angles |

If two lines are cut by a transversal so that corresponding angles are _____, then the lines are _____. | congruent, parallel, corresponding angles converse |

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bellesies