Scale Factor Review

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 missing side if the scale factor is used to find it?

Back

7

Front

A rectangle has dimensions 4cm by 5cm. If a scale factor of 3 is used to enlarge it, what is the new area?

Back

180 cm²

Front

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

Back

Use the scale factor to set up a proportion.

Front

If the perimeter of a smaller rectangle is 16 and the scale factor is 2, what is the perimeter of the larger rectangle?

Back

32.

Front

What is a scale factor?

Back

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

Front

How do you calculate the area of a figure after applying a scale factor?

Back

Multiply the original area by the square of the scale factor.

Front

What is the relationship between similar figures and scale factors?

Back

Similar figures have corresponding sides that are proportional, determined by the scale factor.

Front

If a triangle has sides of 3cm, 4cm, and 5cm, what are the new side lengths if the scale factor is 2?

Back

6cm, 8cm, and 10cm.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size.