Transformation definition flash cards

Set: Transformation definition

Familiarize		Learn		Test
Play Scatter			Play Space Race

Term	Definition
Reflection over y axis	negate x (x,y)-(-x,y)
Reflection over x axis	negate y (x,y)-(x,-y)
Dilation	scale factor:k A(x,y)- A'(kx,ky)
108 degree rotation	negate both x and y A(x,y)- A'(-x,-y)
90 degree clockwise rotation	switch coordinates and negate number new y A(x,y)- A'(y,-x)
90 degree counterclockwise rotation	switch coordinates and negate new x A(x,y)- A'(-y,x)
Translation to the right (a units)	x-- x+a
Translation to the left (a units)	x-- x-a
Translation up (b units)	y-- y+b
Translation down (b units)	y-- y-b