Dilations Flashcard

Front

What are the coordinates of the image of point B (4, 9) where the center of dilation is the origin and the scale factor is 2?

Back

(8, 18)

Front

What is the term for the amount a shape is dilated by?

Back

Scale factor

Front

A dilation is which of the following?

Back

An enlargement or reduction

Front

After a shape has been dilated, the angles are:

Back

Congruent

Front

The point A (8, 12) was dilated to become point A' (2, 3). What was the scale factor?

Back

¼

Front

What is a dilation in geometry?

Back

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

Front

What happens to the lengths of sides during a dilation?

Back

They are multiplied by the scale factor.

Front

If the scale factor is greater than 1, what type of dilation occurs?

Back

Enlargement

Front

If the scale factor is less than 1, what type of dilation occurs?

Back

Reduction

Front

What is the scale factor if a shape is enlarged from a size of 3 to a size of 9?

Back

3