Scale Factor Practice

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 a figure is enlarged or reduced.

Front

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

Back

The figure undergoes an enlargement.

Front

If the scale factor is less than 1, what happens to the figure?

Back

The figure undergoes a reduction.

Front

What is the scale factor from triangle DEF to triangle ABC if DEF is half the size of ABC?

Back

1/2

Front

What is the scale factor from rectangle ABCD to rectangle MNOP if MNOP is 2/3 the size of ABCD?

Back

2/3

Front

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

Back

Divide the length of a side of the new figure by the length of the corresponding side of the original figure.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding angles are equal.

Front

If line AB corresponds with line XY, what can we say about their lengths?

Back

The lengths of line AB and line XY are proportional based on the scale factor.

Front

What is the scale factor if a figure is enlarged by a factor of 3?

Back

The scale factor is 3.

Front

What is the scale factor if a figure is reduced to 1/4 of its original size?

Back

The scale factor is 1/4.