Dilations and Scale Factor

Front

What happens to a figure when the scale factor is less than one?

Back

The figure undergoes a reduction.

Front

What is the term for the figure before a transformation occurs?

Back

Pre-image.

Front

What happens to a figure when the scale factor is greater than one?

Back

The figure undergoes an enlargement.

Front

True or False: A dilation produces a congruent figure.

Back

False.

Front

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

Back

Yes, enlarge.

Front

What is a dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape.

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 pre-image.

Front

If a triangle has a scale factor of 2, what happens to its area?

Back

The area is multiplied by 4 (2^2).

Front

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

Back

The figure remains unchanged.

Front

What is the relationship between the pre-image and image in a dilation?

Back

The image is similar to the pre-image.