Scale Copy and Scale factors

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to enlarge or reduce a figure.

Front

If a triangle has a length of 14 cm and is enlarged by a scale factor of 3, what is the new length?

Back

42 cm

Front

What does it mean to reduce a shape by a scale factor?

Back

To reduce a shape by a scale factor means to make the shape smaller by multiplying its dimensions by a fraction less than 1.

Front

If a drawing of a soccer field is 14 inches long and the actual field is 98 yards long, what is the scale of the drawing?

Back

1 inch = 7 yards

Front

What is the new length of a shape with an original length of 12 cm when reduced by a scale factor of 4?

Back

3 cm

Front

What is the new width of a shape with an original width of 48 cm when reduced by a scale factor of 4?

Back

12 cm

Front

What does a scale factor of 4/5 indicate?

Back

A scale factor of 4/5 indicates a reduction in size.

Front

How do you calculate the new dimensions of a shape when using a scale factor?

Back

Multiply each dimension of the shape by the scale factor.

Front

What is the scale factor if a shape is enlarged from 5 cm to 15 cm?

Back

The scale factor is 3.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what are the dimensions after applying a scale factor of 2?

Back

Length 20 cm and width 10 cm.