Transformations Flashcards
Transformation
A change in position, size, or shape of a geometric figure.
Preimage
The geometric figure before the transformation
Image
The geometric shape after the transformation
3 Types of Rigid Transformation
Translation
Reflection
Rotation
Translation
A transformation that moves points the same
distance and in the same direction.
A slide.
Reflection
A reflection is a flip across a line of reflection, r, such that preimage point A and image point A’ are equal distance from the line of reflection.
Rotation
A rotation (turn) of xº about point R, call the center of rotation is a transformation such that points maintain their original distance to point R.
Rotation 180º
Rotating 180º cause the signs of the x and y coordinates for all point to change sign.
Rotation 90º
Rotating 90º causes the x and y coordinates to swap. Check which quadrant the point rotates to for proper sign.
What are the Quadrants of the Cartesian Grid?
And the signs of the x,y coordinates?