Dilations

Front

Definition: The figure before a transformation has occurred.

Back

Pre-image

Front

What is the result of dilating Point B(3,-8) by a scale factor of 1/2?

Back

(1.5,-4)

Front

A dilation produces a similar figure. True or False?

Back

True

Front

When the scale factor of a dilation is less than one, the dilation is a reduction. True or False?

Back

True

Front

Given the point C(-3,4), what would C' be after a dilation with a scale factor of 3?

Back

C'(-9,12)

Front

Definition: The figure after a transformation has occurred.

Back

Image

Front

What is the scale factor in a dilation?

Back

The ratio of the distance from the center of dilation to a point on the image to the distance from the center of dilation to the corresponding point on the pre-image.

Front

If a dilation has a scale factor greater than 1, what type of transformation occurs?

Back

An enlargement.

Front

What is the center of dilation?

Back

A fixed point in the plane about which all points are expanded or contracted.

Front

If a point P(2,3) is dilated by a scale factor of 2, what is the new point P'?

Back

P'(4,6)