Scale Factor

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much larger or smaller a figure is compared to another figure.

Front

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

Back

The figure will be enlarged.

Front

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

Back

The figure will be reduced.

Front

What is the formula for calculating scale factor?

Back

Front

What does a scale factor of 2 mean?

Back

A scale factor of 2 means the new figure is twice the size of the original figure.

Front

What does a scale factor of 1/2 mean?

Back

A scale factor of 1/2 means the new figure is half the size of the original figure.

Front

How do you find the scale factor between two similar figures?

Back

To find the scale factor, divide the length of a side of the new figure by the length of the corresponding side of the original figure.

Front

What is the scale factor from triangle ABC to triangle DEF if the sides of DEF are twice as long as those of ABC?

Back

The scale factor is 2/1.

Front

What is the scale factor from a smaller quadrilateral to a larger quadrilateral if the larger is 4 times the size of the smaller?

Back

The scale factor is 4.

Front

Back

This indicates that the triangles are similar and the ratios of their corresponding sides are equal.