scale factor

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 another figure.

Tags

CCSS.7.G.A.1

Front

What happens when the scale factor is greater than 1?

Back

An enlargement occurs.

Tags

CCSS.8.G.A.3

Front

What happens when the scale factor is less than 1?

Back

A reduction occurs.

Tags

CCSS.8.G.A.3

Front

If the scale factor is 1, what does that mean?

Back

The two figures are congruent, meaning they are the same size.

Tags

CCSS.8.G.A.3

Front

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

Back

Divide the length of a side of the larger figure by the length of the corresponding side of the smaller figure.

Tags

CCSS.7.G.A.1

Front

If triangle DEF is similar to triangle ABC and the scale factor is 1/2, what does that imply?

Back

Triangle DEF is half the size of triangle ABC.

Tags

CCSS.HSG.SRT.A.2

Front

What is the scale factor if the original triangle has a side length of 4 and the new triangle has a side length of 16?

Back

The scale factor is 4.

Tags

CCSS.7.G.A.1

Front

If a triangle is enlarged by a scale factor of 3, what happens to its area?

Back

The area increases by a factor of 3^2, or 9.

Tags

CCSS.7.G.A.1

Front

If the scale factor from triangle DEF to triangle ABC is 2, what is the relationship between their areas?

Back

The area of triangle ABC is 4 times the area of triangle DEF.

Tags

CCSS.7.G.A.1

Front

What is the scale factor if the original triangle has a side length of 10 and the new triangle has a side length of 5?

Back

The scale factor is 1/2.

Tags

CCSS.7.G.A.1