Scale Factor and Scale

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.

Front

If the scale factor is greater than 1, what type of transformation occurs?

Back

Enlargement.

Front

If the scale factor is less than 1, what type of transformation occurs?

Back

Reduction.

Front

What does a scale of 1 inch = 20 miles mean?

Back

It means that every inch on the map represents 20 actual miles.

Front

How do you calculate the actual distance using a scale?

Back

Multiply the distance on the map by the scale factor.

Front

What is the scale factor if a shape is enlarged from a size of 2 to a size of 6?

Back

The scale factor is 3.

Front

What is the scale factor if a shape is reduced from a size of 8 to a size of 4?

Back

The scale factor is 1/2.

Front

If a map has a scale of 1:100, what does this mean?

Back

1 unit on the map represents 100 units in reality.

Front

What is the actual distance if the map distance is 3 inches and the scale is 1 inch = 30 miles?

Back

The actual distance is 90 miles.

Front

What is the formula to find the scale factor between two similar figures?

Back

Scale Factor = Length of Image / Length of Original.