Dilations and Scale Factors

Front

What is the definition of dilations in mathematical terms?

Back

To make larger or smaller.

Front

A dilation is which of the following?

Back

Either an enlargement or a reduction.

Front

True or False: A dilation produces a similar figure.

Back

True.

Front

What is the scale factor from ΔDEF to ΔABC if the sides of ΔABC are twice as long as those of ΔDEF?

Back

2.

Front

If the scale factor is less than 1, the new figure will be:

Back

A reduction.

Front

What is a scale factor?

Back

A number that scales, or multiplies, a quantity.

Front

If a figure is dilated by a scale factor of 3, what happens to its size?

Back

The figure becomes three times larger.

Front

What happens to a figure if it is dilated by a scale factor of 1?

Back

The figure remains the same size.

Front

If a triangle has a scale factor of 1/2, how does its area change?

Back

The area is reduced to 1/4 of the original area.

Front

What is the effect of a scale factor greater than 1 on a figure?

Back

It enlarges the figure.