Scale Factor Practice

Front

What is a scale factor?

Back

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

Front

What does a scale factor greater than 1 indicate?

Back

A scale factor greater than 1 indicates an enlargement of the figure.

Front

What does a scale factor less than 1 indicate?

Back

A scale factor less than 1 indicates a reduction of the figure.

Front

How do you calculate the scale factor?

Back

Front

If triangle ABC has a side length of 3 cm and triangle DEF has a side length of 6 cm, what is the scale factor from ABC to DEF?

Back

Front

If a rectangle has dimensions 2 ft by 4 ft and a scale factor of 3 is applied, what are the new dimensions?

Back

The new dimensions are 6 ft by 12 ft.

Front

What is the scale factor from triangle ABC to triangle DEF if the scale factor is 1/2?

Back

The new figure (DEF) is half the size of the original figure (ABC).

Front

If a shape is enlarged by a scale factor of 5, what happens to its area?

Back

The area of the shape increases by a factor of 5^2 = 25.

Front

What is the relationship between scale factor and proportionality?

Back

The scale factor indicates how two figures are proportional to each other in size.

Front

If the original figure has a perimeter of 20 cm and the scale factor is 2, what is the perimeter of the new figure?

Back

The perimeter of the new figure is 40 cm.