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10 Cards in this Set
- Front
- Back
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Ray |
A straight line that starts from a point, and continues forever. |
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Line |
A line passes between any two points, and keeps going in both directions. |
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Line segment |
The connection between two points on a line or ray. Because it is between two points, it has a starting and stopping point. |
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Intersection |
The point where a line, plane, ray, or line segment cross over or touch. A line intersects a line at a point, but when two planes cross over, they form a line. |
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Plane |
A 2 dimensional area. It has infinite length and width, but it has no depth. Any three points share a plane! |
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Collinear |
When points are on the same line. This is nothing special with two points, because you can draw a line connecting any two points. |
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Coplanar |
When points or lines share the same plane. This is nothing special with three points, because you can imagine a plane that any three points are on. |
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Parallel |
Lines that never touch. It has two l's in the middle, like parallel lines! Notice the arrow-marks in the middle of each line. Like the "same length" lines, these arrows get added to drawings to show when lines are parallel. |
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Bisector of a line segment |
The bisector is any line/line segment/ray/plane that intersects a line segment at its midpoint. |
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Concurrent |
When lines/rays/segments run through a shared point. |
