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# Geom Ch1Ch2 Ths Defs

### Reviews some of the theorems and definitions learned in chapters 1 and 2

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

If two lines intersect, then they intersect in ***************************. | exactly one point |

Through a line and a point not in the there, there is ************************. | exactly one plane |

Midpoint Theorem: If M is the midpoint of segment AB, then | AM=1/2 AB and MB=1/2 AB |

Definition of a Midpoint: If M is the midpoint of segment AB, then | AM=MB |

Angle Bisector Theorem: If ray BX is the bisector of Angle ABC, then | the measure of Angle ABX = 1/2 the measure of Angle ABC and the measure of Angle XBC = 1/2 the measure of Angle ABC |

Definition of an Angle Bisector: If ray BX is the bisector of Angle ABC, then | the measure of Angle ABX = the measure of Angle XBC |

Vertical Angles are | congruent |

If two lines are perpendicular, then they form ********************* angles | congruent adjacent |

If two lines form congruent adjacent angles, then the lines are ****************. | perpendicular |

If the exterior sides of two adjacent angles are perpendicular, then the angles are ***********************. | complementary |

If the exterior sides of two adjacent angles ***********************, then the angles are complementary. | are perpendicular |

If two angles are supplements of congruent angles, then the two angles ************************. | are congruent |

If two angles are complements of congruent angles, then the two angles are ******************. | congruent |

Supplementary Angles are two angles whose measurements add up to ******. | 180 |

Complementary Angles are two angles whose measurements add up to *******. | 90 |

Created by:
sjmbates