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Definition
| The mapping, or movement, of all the points of a figure in a plane according to a common operation. |
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Definition
| A transformation that "flips" a figure over a line of reflection. |
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Term
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Definition
| A line that acts as a mirror or perpendicular bisector so that corresponding points are the same distance from the mirror. |
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Term
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Definition
| A transformation that "slides" each point of a figure the same distance in the same direction. |
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Term
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Definition
| A transformation that "turns" a figure about a fixed point through a given angle and a given direction. |
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Term
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Definition
| A bisector divides a segment or angle into two equal parts. |
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Definition
| Two lines are parallel if they lie in the same plane and they do not intersect. |
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Definition
| Two lines are perpendicular if they intersect to form right angles (90 degrees). |
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Term
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Definition
| Having the same size, shape and measure. |
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Term
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Definition
| One of the basic undefined terms of geometry. |
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Term
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Definition
| 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. |
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