Scale Factor Practice

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. In geometry, it is the ratio of the dimensions of a scale drawing to the dimensions of the original object.

Tags

CCSS.7.G.A.1

Front

If a scale factor is greater than 1, what does it indicate about the new figure?

Back

It indicates that the new figure is an enlargement of the original figure.

Tags

CCSS.8.G.A.3

Front

What does a scale factor of 1:1 mean?

Back

A scale factor of 1:1 means that the scale drawing is the same size as the original object.

Tags

CCSS.7.G.A.1

Front

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

Back

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

Tags

CCSS.7.G.A.1

Front

What is the scale factor if a rectangle's width is doubled?

Back

The scale factor is 2:1.

Tags

CCSS.7.G.A.1

Front

What does a scale factor of 1/2 indicate about the new figure?

Back

It indicates that the new figure is a reduction of the original figure.

Tags

CCSS.8.G.A.3

Front

How can you express a scale factor as a ratio?

Back

A scale factor can be expressed as a ratio of two lengths, such as 2:1 or 1:2.

Tags

CCSS.7.G.A.1

Front

What is the relationship between scale factor and area?

Back

The area of a figure changes by the square of the scale factor. For example, if the scale factor is 2:1, the area increases by a factor of 4.

Tags

CCSS.7.G.A.1

Front

If a map shows a scale of 1 inch = 42 miles, what is the scale factor?

Back

The scale factor is 1 inch to 42 miles.

Tags

CCSS.7.G.A.1

Front

What happens to the dimensions of a figure if the scale factor is less than 1?

Back

The dimensions of the figure will decrease, resulting in a smaller figure.

Tags

CCSS.8.G.A.3