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Geometry {Lesson 2}
Points, Lines, and Planes
| Term | Definition |
|---|---|
| Geometry | A mathematical system built on accepted facts, basic terms, and definitions. |
| Undefined terms | The basic ideas that you can use to build the definitions of all other figures in geometry. |
| Point | Indicates a location and has no size. |
| Line | Represented by a straight path that extends in two opposite directions who end and have no thickness. This also contains infinitely many points. |
| Plane | Represented by a flat surface that extends without end and has no thickness. It also contains many lines. |
| Collinear points | Points that lie on the same line. |
| Coplanar | Points and lines that lie on the same plane. |
| Space | The set of all points in three dimensions. |
| Segment | Part of a line that consist of two endpoints and all points between them. |
| Ray | Part of a line that consists of one endpoint and all the points of the line on one side of the endpoint. |
| Opposite rays | Two rays that share the same endpoint and share a line. |
| Postulate/Axiom | An accepted statement of fact. |
| Intersection | The set of points the figures have in common. |
Created by:
Rylee.emma
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