Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Geometry exam prep 1

### Geometry

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

Inductive Reasoning | is reasoning that is based on patterns you observe. |

Conjecture | a conclusion you reach using inductive reasoning |

Counterexample | is an example for which the conjecture is incorrect |

Point | like a location |

Space | set of all points |

Line | a series of points that extends in two opposite direction without end. You can name a line by any two points on the line, such as. Another way to name a line is with a single lowercase letter such as line t. |

Collinear Points | points that lie on the same line |

Plane | is a flat surface that has no thickness. A plane contains many lines and extends without end in the direction of all its lines. You can name a plane by either a single capital letter, or by a least three noncollinear points |

Coplanar | Points and lines in the same plane |

Postulate or axiom | is an accepted statement of fact |

Postulate 1-1 | Through any two points there is exactly one line |

Postulate 1-2 | If two lines intersect, then they intersect in exactly one point |

Postulate 1-3 | If two planes intersect, then they intersect in exactly one line |

Postulate 1-4 | Through any tree noncollinear points there is exactly one plane |

Segment | is the part of a line consisting of two endpoints and all points between them |

Ray | is the part of a line consisting of one endpoint and all of the points of the line on one side of the endpoints |

Opposite Rays | are two collinear rays with the same endpoint. Opposite rays always form a line |

Parallel Lines | coplanar lines that do not intersect |

Skew Lines | are noncoplanar; therefore, they are not parallel and do not intersect |

Parallel Planes | are planes that do not intersect |

Postulate 1-5 Ruler Postulate | The points of a line can be put into one-to-one correspondence with the real numbers so that the distance between any two points is the absolute value of the difference of the corresponding numbers |

Congruent segments | two segments with the same length |

Midpoint | of a segment is a point that divides a segment into two congruent segments. A midpoint is said to bisect the segment |

Angle | is formed by two rays with the same endpoint. The rays are the sides of the angle. The endpoint is the vertex of the angle |

Acute Angle | 0 < x < 90 |

Right Angles | x = 90 |

Obtuse Angle | 90 < x < 180 |

Straight Angle | = 180 |

Congruent Angles | angles with the same measure |

Perpendicular Lines | are two lines that intersect to form right angles. |

Angle Bisector | is a ray that divides an angle into two congruent coplanar angles |

Perpendicular Bisector | of a segment is a line, segment, or ray that is perpendicular to the segment at its midpoint, thereby bisecting the segment into two congruent segments |

Created by:
AnimalLover18