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# Ch 2 Geometry

### Ch 2 Terms and Conjectures

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

What is the name of two angles that form a line and add up to 180 degrees? | linear pair |

At the intersection of two lines, which two angles are congruent? | vertical angles |

When corresponding angles are congruent, what is known about the two lines cut by a transversal? | parallel |

Name the three kinds of angles that are congruent when two parallel lines are cut by a transversal. | corresponding, alternate interior, alternate exterior |

If two parallel lines are cut by a transversal, which pair of angles are between the parallel lines and on opposite sides of the transversal? | alternate interior angles |

If two parallel lines are cut by a transversal, which pair of angles are outside the parallel lines and on opposite sides of the transversal? | alternate exterior angles |

When alternate interior angles are congruent, what is known about the two lines cut by a transversal? | parallel |

When alternate exterior angles are congruent, what is known about the two lines cut by a transversal? | parallel |

What are the three steps of inductive reasoning? | observing data, recognizing patterns, making conjectures about those patterns |

What is a generalization made by inductive reasoning? | conjecture |

What is the name of the rule that gives the nth term for a sequence? | function rule |

What is a function rule that generates a sequence with a constant difference or constant slope? | linear function |

What is a set of numbers that can be arranged in a pattern of triangular dots? | triangular numbers |

What is a set of numbers that can be arranged in a pattern of rectangular dots? | rectangular numbers |

What is the process of showing that certain statements follow logically from agreed-upon assumptions and proven facts? | deductive reasoning |

What is the line that intersects two or more other lines in a plane? | transversal |

What can be used to prove a function rule or generalization is false? | counterexample |

What is created when the "if" and "then" parts of an "if-then" statement are switched? | converse |