Finding Scale Factor

Front

What is the scale factor?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced compared to another figure.

Front

If the scale factor is greater than 1, what does it indicate?

Back

It indicates that the figure is enlarged.

Front

If the scale factor is less than 1, what does it indicate?

Back

It indicates that the figure is reduced.

Front

What is the scale factor of a figure that is twice the size of the original?

Back

The scale factor is 2.

Front

What is the scale factor of a figure that is half the size of the original?

Back

The scale factor is ½.

Front

How do you find the missing side of a similar figure?

Back

You can find the missing side by using the scale factor and the known side lengths.

Front

What does it mean for two triangles to be similar?

Back

It means that they have the same shape but may be different sizes, with corresponding angles equal and sides in proportion.

Front

If triangle A has sides of 3, 4, and 5, and triangle B has a scale factor of 2, what are the lengths of triangle B's sides?

Back

The lengths of triangle B's sides are 6, 8, and 10.

Front

What is an example of a scale factor of 1?

Back

A scale factor of 1 means the figure remains the same size; it is neither enlarged nor reduced.

Front

What is the relationship between scale factor and area?

Back

If the scale factor is k, the area of the new figure is k² times the area of the original figure.