Scale Factor Review

Front

What is the definition of a scale factor?

Back

A scale factor is the number you multiply by the sides of a figure to create a similar figure.

Front

If a scale factor is greater than 1, what happens to the size of the figure?

Back

The figure gets bigger.

Front

What does a scale factor less than 1 indicate about the new figure?

Back

The new figure will be a reduction.

Front

How do you calculate the actual distance using a map scale of 1cm : 3 miles if the distance on the map is 7cm?

Back

Multiply 7cm by 3 miles/cm to get 21 miles.

Front

If a map has a scale of 1cm : 4km, how do you find the distance on the map for an actual distance of 52km?

Back

Divide 52km by 4km/cm to get 13cm.

Front

What is the relationship between scale factors and similar figures?

Back

Scale factors determine how much larger or smaller a similar figure is compared to the original figure.

Front

What is the formula to find the actual distance from a map scale?

Back

Actual distance = Distance on map × Scale factor.

Front

In the context of scale factors, what does 'similar figures' mean?

Back

Similar figures are shapes that have the same shape but may differ in size, related by a scale factor.

Front

What is an example of a scale factor of 2?

Back

If the original figure has a side length of 3 units, the new figure will have a side length of 6 units (3 units × 2).

Front

How would you express a scale factor of 0.5 in terms of size change?

Back

A scale factor of 0.5 indicates that the new figure is half the size of the original figure.