Finding Missing Side Length/Scale Factor

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 one figure is compared to another.

Front

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

Back

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

Front

If the scale factor is 1/2, what does that mean?

Back

It means that the dimensions of the smaller shape are half the dimensions of the larger shape.

Front

What is the scale factor from a small rectangle with a width of 4 cm to a large rectangle with a width of 8 cm?

Back

2

Front

If a tree is represented as 20m tall in a drawing with a scale factor of 1/4, what is the actual height of the tree?

Back

80m

Front

What is the missing side length if the scale factor is 3 and the corresponding side of the larger shape is 36?

Back

12

Front

If the scale factor from a small fry to a large fry is 3, what does that imply about their sizes?

Back

The large fry is 3 times larger than the small fry.

Front

How do you calculate the missing side length when given a scale factor?

Back

Multiply the known side length by the scale factor to find the missing side length.

Front

What is the scale factor if a rectangle's length is 10 cm and its scaled version's length is 5 cm?

Back

1/2

Front

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

Back

1/10