Dilations and Scale Factor

Front

If two polygons are SIMILAR, then the corresponding angles must be _____

Back

Congruent

Front

In a dilation what mathematical operation is used with the scale factor?

Back

Multiplication

Front

If OA'=9 and OA=36, determine A'C' if AC = 64

Back

16

Front

Find the scale factor of the dilation. Then tell whether the dilation is a reduction or an enlargement.

Back

2 / 5; reduction

Front

If the scale factor is greater than one, the new figure will be

Back

an enlargement

Front

What is a dilation in geometry?

Back

A transformation that produces a figure similar to the original by scaling it larger or smaller.

Front

What is the scale factor in a dilation?

Back

The ratio of the length of a side of the image to the length of the corresponding side of the original figure.

Front

If the scale factor is less than one, the dilation is called a

Back

reduction.

Front

What happens to the angles of a figure during a dilation?

Back

The angles remain congruent.

Front

How do you calculate the scale factor from two similar figures?

Back

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