Intro to Scale Factor Dilations

Front

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

Back

The figure undergoes a reduction.

Tags

CCSS.8.G.A.3

Front

What is the image of the point B (4,9) under a dilation with center at the origin and scale factor of 2?

Back

B' (8, 18)

Tags

CCSS.8.G.A.3

Front

True or False: A dilation creates a similar figure.

Back

True

Tags

CCSS.8.G.A.3

Front

What is the image of the point B (-10,-6) under a dilation with center at the origin and scale factor k = 1/2?

Back

B' (-5, -3)

Tags

CCSS.8.G.A.3

Front

True or False: A scale factor of 1/2 reduces a figure.

Back

True

Tags

CCSS.8.G.A.3

Front

Define scale factor in the context of dilations.

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

What is the effect of a scale factor greater than 1 on a figure?

Back

The figure undergoes an enlargement.

Tags

CCSS.8.G.A.3

Front

If a figure is dilated by a scale factor of 3, what is the relationship between the original figure and the new figure?

Back

The new figure is three times larger than the original figure.

Tags

CCSS.8.G.A.3

Front

What is the center of dilation?

Back

The center of dilation is the fixed point in the plane about which all points are expanded or contracted.

Tags

CCSS.8.G.A.3

Front

How do you calculate the coordinates of a dilated point?

Back

Multiply the original coordinates by the scale factor.

Tags

CCSS.8.G.A.3