Transformation STAAR Lesson

Transformation STAAR Lesson

Transformation

An operation that maps a geometric figure call a preimage onto a new figure called the image.

4 Types of Transformations

Translation

Reflection

Rotation

Dilation

TranSLation

Slide- the figure is moved (slides) but the shape stays the same (congruent)

TranSLation

(x, y) --> (x - 3, y - 2)

How do I know which is the original image and which is the new image???

ReFLection

Flip- the image is a mirro of the preimage but reflected over a line on the coordinate plane.

ReFLection

Flip

RoTation

Turn- The geometric figure is rotated or turned about a fixed point.

RoTation

Dilation

The image and preimage are the same shape but not the same size.

The only transformation to not preserve congruence

Dilation

The size is either multiplied by a whole number or by a fraction.