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# Math Terms

### 9th Grade Youndt Math Terms

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

Def. Of Midpoint | A point in the center of a line that divides them into 2 equal segments |

Def. of Angle Bisector | A ray that intersects an angle creating 2 angles |

Def. of Supp. angles | 2 angles that equal 180 when added together |

Def of Comp. angles | 2 angles that equal 90 when added together |

Def. of Right Angle | An angle that is 90 degrees |

Def. of perpindicular lines | Lines that intersect at a point |

Vertical Angle Theorem | Vertical Angles are congruent |

Corresponding Angles | Angles in the same position |

Alternate interior angles | Angles on opposite sides of a lone that are congruent |

Same side interior angles | Angles on the same side of a line that are congruent |

All right angles are congruent | (blank) |

Same Side Interior Theorem | If a transversal intersects two parallel lines, then a |

Alternate Interior Angle Theorem | If a transversal intersects 2 parallel lines, then alternate interior angles are congruent |

Symmetric Property of Equality | If a=b then ba |

Symmetric prop of Congruence | If AB=CD then CD=AB |

Transitive Prop of equality | If a=b and b=c then a=c |

Transitive prop of congruence | If AB=CD and CD=Ef then AB=EF |

If two angles are congruent and supplementary | Each is a right angle |

If two lines are perpendicular to the same line | Then the lines are parallel |

If two lines are parallel to the same line | then the lines are perpendicular to each other |

Created by:
bluehicke35