Scaled Copies

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 scaled copy is compared to the original.

Front

If a small fry is scaled up to a large fry with a scale factor of 3, how much larger is the large fry?

Back

The large fry is 3 times larger than the small fry.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding sides are in proportion.

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 larger figure by the length of the corresponding side of the smaller figure.

Front

If the scale factor is 1/2, what does that indicate about the size of the scaled copy?

Back

It indicates that the scaled copy is half the size of the original figure.

Front

What is the relationship between corresponding sides of similar figures?

Back

The lengths of corresponding sides of similar figures are proportional to each other.

Front

If line CB corresponds with line RQ, what can we say about their lengths?

Back

The lengths of line CB and line RQ are in proportion based on the scale factor.

Front

What is the scale factor if a figure is enlarged from a size of 4 units to 16 units?

Back

The scale factor is 4, since 16 divided by 4 equals 4.

Front

In a scaled copy, if the original figure has a side length of 10 units and the scaled copy has a side length of 5 units, what is the scale factor?

Back

The scale factor is 1/2.

Front

What does it mean if a scale factor is greater than 1?

Back

If a scale factor is greater than 1, the scaled copy is larger than the original figure.