Math basic rules

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7 Terms

1
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reflection over x-axis

(x,y)→(x,-y)

2
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reflection over y-axis

(x,y)→(-x,y)

3
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reflection over y=x

(x,y)→(y,x)

4
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translation by some vector

(x,y)→(x+a,y+b)

5
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90 degree counter clockwise rotation (270 degree clockwise rotation)

(x,y)→(-y,x)

6
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180 degree rotation counter clockwise or clockwise

(x,y)→(-x,-y)

7
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270 degree rotation counter clockwise or a 90 degree clockwise rotation

(x,y)→(y,-x)