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# Geometry Ch1 Vocab

### MD Geometry Chapter 1 Vocabulary

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

Is a line, segment, ray or plane that intersects a segment at it's midpoint. | segment bisector |

A pair of adjacent angles whose non-common sides are opposite rays | linear pair |

Are collinear ray with the same endpoints that form a line. | opposite ray |

Formed by 2 rays with the same endpoint. The common endpoint is the vertex. | angle |

Set of values that show an exact position. This is the distance and position from the origin of a number line. | coordinate of a point |

It is undefined, has no thickness, and is a flat surface. | plane |

Are two angles whose sides form 2 pairs of opposite rays. | vertical angles |

A part of a line that consists of 2 points called endpoints and all the points between them. | segment |

Segment that have the same length. | congruent segments |

Angle that equals 90 degrees. | right angle |

Not in the same plane. | non-coplanar |

Is the point that the segment in to two congruent halves or the point right in the middle. | midpoint |

Common point or end point of an angle. | vertex of the angle |

Are angles that have the same measure. | congruent angles |

Rays of an angle. | side of an angle |

Two coplanar angles that have one common side and a common vertex but no common interior. | adjacent angles |

In the same plane. | coplanar |

Is a ray that divides an angle into two congruent angles. | angle bisector |

Is the part of a line that consists of one endpoint and all of the points of the line on one side of the endpoint. | ray |

Is an accepted statement or fact | postulate or axiom |

Two angles are ________ if the sum of their measures is 180 degrees. | supplementary angles |

A angle whose measure is equal to 180 degrees. | straight angle |

Is the set of all points. | space |

Two angles are _______ if the sum of the measure is 90 degrees. | complementary angles |

The absolute value of the distance of the coordinates of the points. | distance between 2 points on a line |

Points that do not lie on the same line. | non-collinear |

Is a 2 dimensional pattern that you can fold to form a 3 dimensional figure. | net |

Points lying in the same straight line. | collinear |

It is undefined, a straight path in two ways, and no endpoint. | line |

It is undefined, is thought of as a location, and has no size | point |

The______ of 2 or more geometric figures is the set of points the figures have in common. | intersection |

Angle smaller than 90 degrees. | acute angle |

Angle greater that 90 degrees. | Obtuse angle |

Created by:
LForzley