Definition :
Definition A rule or action that changes a figure in some way.
Translation “Slide”
Rotations “Turn”
Reflection “Flip”
Translation :
Translation Move an object without changing the orientation.
Rotation :
Rotation Turn an object about some fixed point called the center of rotation. Center of rotation.
Reflection :
Reflection Flip an object over a line called the line of reflection.
Try These… :
Try These… Where’s the center of rotation? Is this a reflection or a translation. Where’s the line of reflection? Translation
Using Coordinate Rules :
Using Coordinate Rules Find the coordinates of the image
Use the rule to change the coordinates
Graph the new image
Try This :
Try This Use the rule (x,y)(-y,x) on the figure below -1 -4 -1 -6 -6 -6
Try This :
Try This Use the rule (x,y)(y,-x) on the figure below 1 4 1 6 6 6
Try This :
Try This Use the rule (x,y)(-x,-y) on the figure below 4 -1 6 -1 6 -6
Try This :
Try This Use the rule (x,y)(x,-y) on the figure below -1 -2 -3 -2 -1 3