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 determine how much larger or smaller a figure is compared to the original.

Front

If the scale factor is 4, what does that mean?

Back

It means that the new figure is 4 times larger than the original figure.

Front

What is the formula for calculating the scale factor?

Back

Front

What happens to a figure if the scale factor is less than 1?

Back

If the scale factor is less than 1, the figure is reduced in size.

Front

What happens to a figure if the scale factor is greater than 1?

Back

If the scale factor is greater than 1, the figure is enlarged.

Front

How do you find the new length of a side when given the original length and the scale factor?

Back

Multiply the original length by the scale factor.

Front

If the original length is 10 m and the scale factor is 3, what is the new length?

Back

The new length is 30 m (10 m x 3).

Front

What is the relationship between corresponding sides of similar figures?

Back

The ratios of the lengths of corresponding sides of similar figures are equal to the scale factor.

Front

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

Back

The new lengths are 6 cm, 8 cm, and 10 cm.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but different sizes, and their corresponding sides are in proportion.