Dilations and Scale Factor Practice

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but not its shape, using a scale factor.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure during a dilation.

Front

If a scale factor is greater than 1, what type of transformation is it?

Back

It is an enlargement.

Front

If a scale factor is less than 1, what type of transformation is it?

Back

It is a reduction.

Front

What is the scale factor if a figure is reduced to half its size?

Back

The scale factor is 1/2.

Front

How do you determine the scale factor from a dilation?

Back

Divide the length of a side of the image by the length of the corresponding side of the preimage.

Front

What happens to the coordinates of a point (x, y) when it is dilated by a scale factor k?

Back

The new coordinates become (kx, ky).

Front

If point A (8, 12) is dilated to point A' (2, 3), what is the scale factor?

Back

The scale factor is 1/4.

Front

What is the result of a dilation with a scale factor of 1?

Back

The figure remains unchanged.

Front

If a dilation has a scale factor of 0.5, how is it classified?

Back

It is classified as a reduction.