4/11 7th Math Dilations

If a Scale Factor if greater than 1, then your figure gets...

• Smaller
• Bigger
• Does not change

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CCSS.8.G.A.3

Picture: 3 cm

Actual: 12 ft.

What is the scale factor?

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CCSS.7.G.A.1

The scale from a map to to real life show that 3 cm is 150 yds. What is the scale factor?

• 750

• 3/150

• 50

• 15/3

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CCSS.3.NF.A.3D

• A

• B

• C

• D

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CCSS.HSG.CO.A.2

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

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CCSS.8.G.A.3

A dilation produces a congruent figure

• True

• False

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CCSS.8.G.A.3

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

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CCSS.8.G.A.3

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

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CCSS.8.G.A.3

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

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CCSS.7.G.A.1

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)

Tags

CCSS.8.G.A.3