8th Grade Dilations

Front

What is a dilation in geometry?

Back

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

Tags

CCSS.8.G.A.3

Front

What happens to a figure when the scale factor is greater than 1?

Back

The figure enlarges.

Tags

CCSS.8.G.A.3

Front

What happens to a figure when the scale factor is less than 1?

Back

The figure reduces.

Tags

CCSS.8.G.A.3

Front

What is the scale factor in a dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.

Tags

CCSS.8.G.A.3

Front

If a scale factor is 1/2, what type of dilation is it?

Back

It is a reduction.

Tags

CCSS.8.G.A.3

Front

If a scale factor is 2, what type of dilation is it?

Back

It is an enlargement.

Tags

CCSS.8.G.A.3

Front

True or False: A dilation with a scale factor of 1 results in no change to the figure.

Back

True.

Tags

CCSS.8.G.A.3

Front

What is the effect of a negative scale factor in dilation?

Back

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

Tags

CCSS.8.G.A.3

Front

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

Back

If the scale factor is greater than 1, it is an enlargement; if it is less than 1, it is a reduction.

Tags

CCSS.8.G.A.3

Front

What is the scale factor if a figure is reduced to half its size?

Back

The scale factor is 1/2.

Tags

CCSS.7.G.A.1