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# Howard Geometry 2

### Chapter 2 Geometry Vocabulary

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

Adjacent Angles | Two angle that share a common vertex and common side, but no common interior points |

Theorem | A true statement that follows from other true statements |

Hypothesis | The "if" part of an if-then statement |

Transitive Property | If AB=BC and BC=DE, then AB=DE |

Bisect | To divide into two equal halves |

Angle Bisector | A ray that divides and angle into two equal angles |

Complementary Angles | Two angles whose sum is 90 degrees |

Deductive Reasoning | Uses facts, definitions, properties, and laws of logic to make a logical argument |

Supplementary Angles | Two angles whose sum is 180 degrees |

Conclusion | The "then" part of an if-then statement |

Conditional Statement | An If-Then statement |

Linear Pair | Two adjacent angles whose non-common side is the same line |

Segment Bisector | A segment, ray, line, or plane that intersects a segment at its midpoint |

Symmetric Property | If AB=DE, then DE=AB |

Vertical Angles | Two non-adjacent angles whose sides are formed by 2 intersecting lines |

Vertex | The point where two sides on an angle meet |

Congruent Segments | Segments with the same length |

Reflexive Property | AB=AB |

Addition Property | If x = 6, then x + 2 = 6 + 2 |

Subtraction Property | If m = 5, then m - 3 = 5 - 3 |

Multiplication Property | If n = 2, then 3 ∙ n = 3 ∙ 2 |

Division Property | If 8 = t, then 8 ÷ 2 = t ÷ 2 |

Substitution Property | If n = 3 and y = 4∙ n, then y = 4 ∙ 3 |

Linear Pair Postulate | Linear pairs are supplementary. |

Vertical Angles Theorem | Vertical angles are congruent. |

Midpoint | The point on a segment that divides it into two, congruent segments. |

Midpoint Formula | The midpoint of (a,b) and (c,d) is: ( [a+c]/2 , [b+d]/2 ) Average the x-coordinate and average the y-coordinates. |

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HowardGeometry