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Geometry Chapter 2
Chapter 2 Vocab
| Term | Definition |
|---|---|
| Vector | a quantity with direction and magnitude |
| Initial Point | where the vector starts |
| Terminal Point | where the vector ends |
| Translation | a transformation along a vector such that the segment joining a point and its image has the same length as the vector and is parallel to the vector |
| Perpendicular Lines | lines that intersect at right angles |
| Perpendicular Bisector | a line segment that is perpendicular to another segment at the segment's midpoint |
| Reflection | a mirror image w/ p that is mapped across line L from its preimage p |
| Rotation | a transformation around point p =center of rotation |
| Center of rotation | the point that does not move during rotation |
| Angle of rotation | all angels with vertex p formed by a point and its image have the same measure |
| Symmetry | if a rigid motion exists that maps the figure onto itself |
| Line of Symmetry | if a reflection maps the figure onto itself |
| Rotational Symmetry | symmetry that occurs if you can take the image, rotate it, and place it onto itself |
| Angle of Rotation symmetry | greater than 0 degrees but less than or equal to 180 degrees, is the smallest angle of rotation that maps the figure onto itself |
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