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# Geometry 2/2

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

inductive reasoning | look for a pattern, make a conjecture using examples, use logical reasoning to verify the ocnjecture. |

attributes | a way to characterize items based on these items having the same characteristics |

congruent figures | two figures that have the same shape and size |

similar figures | same shape |

if 2 figures are congruant, then they are ___ | similar |

not always congurant if _____ | similar |

line symmetry | figure can be divided into 2 parts, each of which is the mirror image of the other |

rotational symmetry | the figure is rotated 0 to 180 degrees about its center and the resting figure coincided with the original |

optical illusions | when your eyes see something differently or are tricked into believing something is true when it's not |

point | can be thought of as a dot that represents a location in a plan or space |

line | an infinite number of points extending in both directions |

plane | a flat surgace that extends infinitely in all directions |

segment | a part of a line having two endpoints |

ray | a part of a line having one endpoint |

angle | consists of two different rays that have the same inital point called the vertex |

opposite rays | two rays with a common endpoint going in opposite directions |

adjacent angles | two angles that share a common vertex and side but have no common interior points |

bisect | to cut an object into 2 congruent parts |

segment bisector | a segment that bisects another segment into 2 congruent segments |

angle bisector | a ray that bisects an angle into 2 congruent angles |

midpoint | the point that divides a segment into 2 congruent parts |

collinear | points on the same line |

coplanar | points on the same plane |

exterior points | points contained outside an angle |

interior points | points contained inside an angle |

parallel lines | 2 or more coplanar lines traveling in the same direction and never intersect |

perpendicular lines | 2 coplanar lines that intersect to form 90 degree angles |

postulate | a statement that is accepted as true without proof |

theorem | a rule that has been proven |

segment addition postulate | if B is between A, then AB + BC = AC |

Angle addition postulate | if C is in the interior of angle AOD, then Angle AOC + COD = AOD |

Created by:
Ljg1237