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Geometry Rules
rules for transformations
12
Other
10th Grade
03/08/2010

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Cards

Term
(x-a , y)
Definition
a point slides to the left "a" number of spaces
Term
(x+a , y)
Definition
a point slides to the right "a" number of spaces
Term
(x , y+b)
Definition
a point slides up "b" number of spaces
Term
(x , y-b)
Definition
a point slides down "b" number of spaces
Term
(-x , y)
Definition
a point is reflected over the y-axis
Term
(x , -y)
Definition
a point is reflected over the x-axis
Term
(y , x)
Definition
a point is reflected over the line y=x
Term
(y , -x)
Definition
a point is rotated 90º clockwise around the origin
Term
(-y , x)
Definition
a point is rotated 90º counterclockwise around the origin
Term
(-x , -y)
Definition
a point is rotated 180º clockwise or counterclockwise around the origin
Term
(ax , ay)
Definition
a point is dilated by a scale factor of "a"
Term
[(1/a)x , (1/a)y]
Definition
a point is dilated by a scale factor of 1/"a"
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