Dilations

Front

What is Dilation?

Back

Dilation means to enlarge or reduce.

Front

A scale factor of less than one means:

Back

That the prime image will be a reduction of the preimage.

Front

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

Back

¼

Front

A dilation can produce a smaller figure or a(n)______

Back

reduction.

Front

Definition: The figure before a transformation has occurred.

Back

Pre-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 and the distance from the center of dilation to the corresponding point on the pre-image.

Front

If a figure is dilated by a scale factor of 2, what happens to its size?

Back

The figure is enlarged to twice its original size.

Front

What is the center of dilation?

Back

The fixed point in a dilation from which all points are expanded or contracted.

Front

If the scale factor is 1, what happens to the figure?

Back

The figure remains the same size; it is neither enlarged nor reduced.

Front

What is the effect of a negative scale factor in dilation?

Back

It produces a figure that is a reflection across the center of dilation and scaled.