Scale Factor

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 another figure.

Front

If the scale factor is greater than 1, what does it indicate?

Back

It indicates an enlargement of the figure.

Front

If the scale factor is less than 1, what does it indicate?

Back

It indicates a reduction of the figure.

Front

What is the scale factor if a triangle is enlarged from a size of 2 to a size of 8?

Back

The scale factor is 4.

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.

Front

What is the scale factor if a figure is reduced from a size of 10 to a size of 5?

Back

The scale factor is 1/2.

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

If a triangle has a height of 6 ft and is enlarged by a scale factor of 3, what is the new height?

Back

The new height is 18 ft.

Front

What is the scale factor if a rectangle's length is doubled?

Back

The scale factor is 2.

Front

If a figure is reduced by a scale factor of 1/3, what happens to its area?

Back

The area is reduced to 1/9 of the original area.