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Geometry reflections
Reflections
| Form | Analytic notation (x,y) to.... |
|---|---|
| Rotation of 90° | (-y, x) Negate Y and Flip |
| Rotation of 180° or reflection in the origin | (-x, -y) Both Negate |
| Rotation of 270° | (y, -x) They switch and negate the new Y |
| Translation A units horizontal and B units vertical | (x-A, y+B) |
| Reflection in the x-axis | (x, -y) Y Negates |
| Reflection in the y-axis | (-x, y) X Negates |
| Reflection in the y=x | (y, x)Flip |
| Reflection in the y = -x | (-y, -x) Negate and Flip both |