Scale Factor

Front

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

Back

The new figure will be a reduction.

Front

If two figures are similar, how do you find the missing side?

Back

Use the scale factor to set up a proportion between the corresponding sides.

Front

What are matching sides in similar figures called?

Back

Corresponding Sides.

Front

If a model of a flagpole has a scale of 1 in. = 4 ft and the model measures 12 inches, how tall is the actual pole?

Back

48 feet.

Front

What is the width of a backyard in a drawing if the scale is 1 in. = 7 ft and the actual width is 49 ft?

Back

7 inches.

Front

Define scale factor.

Back

The ratio of the lengths of corresponding sides of two similar figures.

Front

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

Back

The scale factor is 4.

Front

How do you determine if two figures are similar?

Back

If their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is the scale of a drawing if a 10 ft object is represented as 2 inches?

Back

The scale is 1 in. = 5 ft.

Front

If a triangle has sides of 3 cm, 4 cm, and 5 cm, what are the corresponding sides of a similar triangle with a scale factor of 2?

Back

6 cm, 8 cm, and 10 cm.