Dilation and Similarity Transformations

Front

What does congruent mean?

Back

Corresponding sides and angles are congruent.

Front

What is the result of a dilation that increases the size of a figure?

Back

An enlargement.

Front

What transformations keep figures congruent?

Back

Translation, reflection, and rotation.

Front

What is a scale factor in 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

True or false: When a figure is dilated, the corresponding sides are proportional.

Back

True.

Front

What is the difference between enlargement and reduction in dilation?

Back

Enlargement increases the size of the figure, while reduction decreases it.

Front

What is a dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape.

Front

How do you determine if a dilation is an enlargement or a reduction?

Back

By comparing the scale factor to 1; if the scale factor is greater than 1, it's an enlargement; if less than 1, it's a reduction.

Front

What is the scale factor if a figure is enlarged from a size of 3 to a size of 6?

Back

The scale factor is 2.

Front

What is the effect of a translation on a figure?

Back

It moves the figure to a different location without changing its size or shape.