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10 Cards in this Set
- Front
- Back
Reflection across x-axis |
The x-value remains the same, while the y-value changes signs. |
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Reflection across y-axis |
The y-value remains the same, while the x-value changes signs. |
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Reflection across y = x |
The x & y values “switch”. Object “flips” across the line y = x |
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Reflection across y = -x |
Object “flips” across the line y = -xThe x & y values “switch” and their signs change |
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Reflection through the origin |
Reflection in the origin is an example of a “point reflection”The signs of the x & y values change for each ordered pair |
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Rotation of 90 degrees counterclockwise |
“Turns” 90º about the originRule: (x, y) -> (-y, x) |
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Rotation of 180 degrees counterclockwise |
“Turns” 180º about the originRule: (x, y) -> (-x, -y)Same as a reflection in the origin |
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Rotation of 270 degrees counterclockwise |
Rotation of 270 degrees counterclockwise |
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Dilation |
Dilations enlarge or reduce an object by a scale factor. |
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Translation |
“Slides” move an object left or right and up or down on a coordinate plane. |