Scale Factor Flashcard

Front

What is the scale factor?

Back

The scale factor is a number that scales, or multiplies, some quantity. It is the ratio of the length of a side of a scaled figure to the length of the corresponding side of the original figure.

Front

How do you calculate the scale factor?

Back

To calculate the scale factor, divide the length of a side of the scaled figure by the length of the corresponding side of the original figure.

Front

What is the scale factor if the original length is 6 cm and the scaled length is 12 cm?

Back

2

Front

If two figures are similar and the scale factor is 3, what is the ratio of their corresponding side lengths?

Back

3:1

Front

What does a scale factor of 1 indicate?

Back

A scale factor of 1 indicates that the two figures are the same size.

Front

What does a scale factor greater than 1 indicate?

Back

A scale factor greater than 1 indicates an enlargement of the figure.

Front

What does a scale factor less than 1 indicate?

Back

A scale factor less than 1 indicates a reduction of the figure.

Front

If the scale factor is ½, what type of transformation is it?

Back

Reduction

Front

If the scale factor is 5, what type of transformation is it?

Back

Enlargement

Front

What is the scale factor from triangle ABC to triangle DEF if the corresponding sides are in the ratio 2:1?

Back

2:1