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

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

Back

To find the scale factor, divide the length of a side of the larger figure by the length of the corresponding side of the smaller figure.

Front

If the scale factor is 3/2, what does this mean?

Back

This means that the larger figure is 1.5 times the size of the smaller figure.

Front

What is the scale factor from a triangle with sides 4 cm, 6 cm, and 8 cm to a triangle with sides 2 cm, 3 cm, and 4 cm?

Back

The scale factor is 1/2.

Front

If a drawing has a scale of 1 inch = 5 feet, how many feet does 3 inches represent?

Back

3 inches represents 15 feet.

Front

What is the area of a square with a side length of 4 inches?

Back

The area is 16 square inches.

Front

If a scale drawing of a garden has a scale of 2 inches = 5 feet, what is the scale factor?

Back

The scale factor is 5/2 or 2.5.

Front

How do you convert a scale drawing measurement to actual size?

Back

Multiply the measurement in the drawing by the scale factor.

Front

What is the scale factor if a rectangle measuring 10 cm by 5 cm is scaled down to 5 cm by 2.5 cm?

Back

The scale factor is 1/2.

Front

If a model car is 1/10 the size of the actual car, what is the scale factor?

Back

The scale factor is 1/10.