Scale Factor and Dilations

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, a quantity. It is used to determine how much larger or smaller a figure is compared to the original.

Tags

CCSS.7.G.A.1

Front

What does it mean if the scale factor is greater than 1?

Back

If the scale factor is greater than 1, the new figure is an enlargement of the original figure.

Tags

CCSS.8.G.A.3

Front

What does it mean if the scale factor is less than 1?

Back

If the scale factor is less than 1, the new figure is a reduction of the original figure.

Tags

CCSS.8.G.A.3

Front

What is the scale factor of an enlargement?

Back

The scale factor of an enlargement is a number greater than 1.

Tags

CCSS.8.G.A.3

Front

What is the scale factor of a reduction?

Back

The scale factor of a reduction is a number less than 1.

Tags

CCSS.8.G.A.3

Front

If the scale factor is 1, what can we say about the new figure?

Back

If the scale factor is 1, the new figure is the same size as the original figure.

Tags

CCSS.7.G.A.1

Front

How do you find the missing side in similar figures?

Back

To find the missing side in similar figures, set up a proportion using the corresponding sides of the figures.

Tags

CCSS.HSG.SRT.A.2

Front

What is the relationship between similar figures and scale factors?

Back

Similar figures have the same shape but may differ in size, and their corresponding sides are proportional based on the scale factor.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Front

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

Back

The new side lengths will be 6, 8, and 10.

Tags

CCSS.8.G.A.3

Front

What is the effect of a scale factor of ½ on a figure?

Back

A scale factor of ½ reduces the size of the figure to half of its original dimensions.

Tags

CCSS.8.G.A.3