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

What happens when the scale factor is greater than 1?

Back

When the scale factor is greater than 1, it creates an enlargement of the figure.

Front

What happens when the scale factor is less than 1?

Back

When the scale factor is less than 1, it creates a reduction of the figure.

Front

What are corresponding sides?

Back

Corresponding sides are sides that are in the same position in different shapes.

Front

If the scale factor is 4, what does that mean for the dimensions of the shape?

Back

If the scale factor is 4, each dimension of the shape is multiplied by 4, making the shape four times larger.

Front

If a shape is reduced by a scale factor of 0.25, what is the new size compared to the original?

Back

The new size will be one-fourth of the original size.

Front

What is the scale factor if a shape is enlarged from 2 cm to 8 cm?

Back

The scale factor is 4, because 8 cm is 4 times larger than 2 cm.

Front

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

Back

To find the scale factor, divide the length of a side of the larger shape by the length of the corresponding side of the smaller shape.

Front

What is the relationship between scale factor and area?

Back

The area of a shape changes by the square of the scale factor. For example, if the scale factor is 2, the area increases by a factor of 2² = 4.

Front

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

Back

The scale factor is 0.5.