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| A point is an exact location in space. A point describes a location, but has no size. |
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| A line is a set of infinitely many points that extend forever in both directions. A line, like a point, does not take up space. |
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| A plane is infinitely many intersecting lines that extend forever in all directions. Think of a plane as a huge sheet of paper that goes on forever. |
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| A ray is a part of a line with one endpoint that extends forever in the direction opposite that endpoint. |
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| The amount of turn between 2 straight lines that have a common endpoint or vertex. |
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| A 2-diminsional shape made by drawing a curve that is always the same distance from the center. |
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| Lines that are at right angles to each other. |
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| Two lines on a plane that are always the same distance apart and will never meet. |
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| Part of a line that connects 2 endpoints. |
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