Scale Factor Practice

Front

What happens to a figure when the scale factor is less than one?

Back

The new figure will be a reduction.

Front

What is the formula for scale factor?

Back

Front

What happens to a figure when the scale factor is greater than one?

Back

The new figure will be an enlargement.

Front

What is the scale factor from triangle ABC to triangle DEF if the sides of DEF are twice as long as those of ABC?

Back

The scale factor is 2/1.

Front

What is the scale factor from the large triangle to the small triangle if the sides of the small triangle are 3/4 the length of the large triangle?

Back

The scale factor is 3/4.

Front

Define scale factor.

Back

Scale factor is a number that scales, or multiplies, some quantity.

Front

If a shape is enlarged by a scale factor of 3, what is the relationship between the new area and the old area?

Back

The new area will be 9 times the old area.

Front

If a shape is reduced by a scale factor of 1/2, what is the relationship between the new perimeter and the old perimeter?

Back

The new perimeter will be 1/2 of the old perimeter.

Front

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

Back

Divide the length of a side of the new figure by the length of the corresponding side of the old figure.

Front

What is the scale factor if the new length is 5 cm and the old length is 10 cm?

Back