Dilations (Scale Factor)

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a figure but not its shape, using a scale factor.

Tags

CCSS.8.G.A.3

Front

What does the scale factor indicate in a dilation?

Back

The scale factor indicates how much larger or smaller the new figure will be compared to the original figure.

Tags

CCSS.8.G.A.3

Front

If the scale factor is greater than 1, what happens to the size of the figure?

Back

The figure becomes larger.

Tags

CCSS.8.G.A.3

Front

If the scale factor is less than 1, what happens to the size of the figure?

Back

The figure becomes smaller.

Tags

CCSS.8.G.A.3

Front

What is the scale factor if the new shape is smaller than the original?

Back

The scale factor is less than 1.

Tags

CCSS.7.G.A.1

Front

What is the scale factor if the new shape is larger than the original?

Back

The scale factor is greater than 1.

Tags

CCSS.7.G.A.1

Front

What is the scale factor if the new shape is a reflection of the original?

Back

The scale factor is negative.

Tags

CCSS.8.G.A.3

Front

How do you find the new coordinates of a point after dilation?

Back

You multiply the original coordinates by the scale factor.

Tags

CCSS.8.G.A.3

Front

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

Back

The angles remain the same during a dilation.

Tags

CCSS.8.G.A.3

Front

What is the effect of a negative scale factor on a shape?

Back

A negative scale factor reflects the shape across the origin and changes its size.

Tags

CCSS.8.G.A.3