Scale Factor Review

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.

Front

If the scale factor is 3, what does that mean?

Back

It means that the new figure is 3 times larger than the original figure.

Front

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

Back

The dimensions of the figure will be reduced, making it smaller.

Front

What is the scale factor from a small triangle to a large triangle if the sides of the large triangle are twice as long?

Back

The scale factor is 2.

Front

If a rectangle has a length of 4 units and a width of 2 units, what will be the dimensions if the scale factor is 3?

Back

The new dimensions will be 12 units (length) and 6 units (width).

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

If the original side of a figure is 5 units and the scale factor is 1/2, what is the length of the new side?

Back

The new side will be 2.5 units.

Front

What does it mean if a scale factor is equal to 1?

Back

It means that the two figures are the same size; there is no change in dimensions.

Front

If a figure is enlarged by a scale factor of 4, what is the relationship between the areas of the original and new figures?

Back

The area of the new figure will be 16 times larger than the area of the original figure.

Front

What is the scale factor from Triangle ABC to Triangle DEF if the sides of DEF are half the length of ABC?

Back

The scale factor is 1/2.