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G.CO.12 Vocab
| Term | Definition |
|---|---|
| Endpoints | The points at an end of a line segment |
| Compass | geometrical instrument with two arms. One ends in a point, and the other can be attached to a pencil. These are used for drawing circles and arcs. |
| Line Segment | The part of a line between two points on the line. AB denotes a line segment between the points A and B. |
| Line | One of the basic undefined terms of geometry. Traditionally thought of as a set of points that has no thickness but its length goes on forever in two opposite directions. AB denotes a line that passes through point A and B. |
| Ray | begins at a point and goes on forever in one direction |
| Angle | Angles are created by two distinct rays that share a common endpoint (also known as a vertex). <ABC or <B denote angles with vertex B. |
| Perpendicular Bisector | A perpendicular line or segment that passes through the midpoint of a segment. |
| Bisector | divides a segment or angle into two equal parts. |
| Parallel Lines | two lines that lie on the same plane and they do not intersect |
| Point | One of the basic undefined terms of geometry. Traditionally thought of as having no length, width, or thickness, and often a dot is used to represent it. |
| Straightedge | An idealized mathematical object having a rigorously straight edge which can be used to draw a line segment. |
| Intersection | The point at which two or more lines intersect or cross |
| Intersecting Lines | Two lines in a plane that cross each other. Unless two lines are coincidental, parallel, or skew, they will intersect at one point. |
Created by:
kadejascott
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