Dilations and Scale Factor

Front

What mathematical operation is used with the scale factor in a dilation?

Back

Multiplication.

Front

A dilation always produces a similar figure. Similar figures have the same ______ but different ______.

Back

Shape; sizes.

Front

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

Back

Yes, enlarge.

Front

A dilation produces a congruent figure. True or False?

Back

False.

Front

If the blue polygon is the original image, find the scale factor and determine if it is a reduction or enlargement: It's a reduction; the scale factor is 1/2.

Back

It's a reduction; the scale factor is 1/2.

Front

What is a dilation in geometry?

Back

A transformation that produces a figure similar to the original by enlarging or reducing it.

Front

What is the scale factor in a dilation?

Back

The ratio of the length of a side of the image to the length of the corresponding side of the original figure.

Front

If the scale factor is greater than 1, what type of transformation occurs?

Back

Enlargement.

Front

If the scale factor is less than 1, what type of transformation occurs?

Back

Reduction.

Front

What is the effect of a scale factor of 1 on a figure?

Back

The figure remains unchanged.