Dilations and scale factors

Front

What is the scale factor from ΔDEF to ΔABC if the scale factor is 2?

Back

The new figure is twice the size of the original figure.

Front

If the scale factor is less than one, what will the new figure be?

Back

A reduction.

Front

What is the definition of dilations in mathematical terms?

Back

To make larger or smaller.

Front

If the scale factor is greater than 1, what will the new figure be?

Back

An enlargement.

Front

What is the scale factor if the point (8, 12) is dilated to become point (2, 3)?

Back

¼.

Front

What does a scale factor of 1 indicate about the dilation?

Back

The figure remains the same size.

Front

How do you calculate 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 happens to the area of a figure when it is dilated by a scale factor of k?

Back

The area is multiplied by k².

Front

What is the effect of a scale factor of ½ on a figure?

Back

The figure is reduced to half its original size.

Front

If a triangle is dilated by a scale factor of 3, what happens to its perimeter?

Back

The perimeter is tripled.