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analytic Notation

TermDefinition
Reflection in x-axis: (x, y) (x,-y) keep x, negate y
Reflection in y-axis: (x, y) (-x, y) keep y, negate x
Reflection in y = x: (x, y) (y, x) Switch order
Reflection in y = -x: (x, y) (-y, -x) switch & negate both
Reflection in the origin: (x, y) (-x,~y) negate both (same as Rotation of 180° about the origin: (x, y)
• Rotation of 90° about the origin: (x, y) (-Y, x) Switch + negate the
Translation by a units horizontally and b units vertically: (x, y) → (x-a, y+b) (* left 'a' units)
Created by: AvaBonney
 

 



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