Intro to Dilations

First, identify the old and new image. Now, did the triangle get bigger or smaller?

• The triangle got smaller

• The triangle got bigger

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CCSS.8.G.A.3

CCSS.8.G.A.4

First, identify the old and new image. Now, did the triangle get bigger or smaller?

• The triangle got smaller

• The triangle got bigger

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CCSS.HSG.CO.A.2

Is this an enlargement or a reduction?

• Enlargement

• Reduction

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CCSS.8.G.A.3

Did the image enlarge, reduce or none of the above?

• Enlarge
• Reduce
• None of the above

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CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge
• Yes, reduce
• No

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CCSS.8.G.A.3

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

• ½

• ¼

• 4

• 2

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CCSS.8.G.A.3

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

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CCSS.8.G.A.3

If your SF = 6/5, what type of dilation is it?

• Reduction

• Enlargement

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CCSS.8.G.A.3

Dilate Point B by a scale factor of 3:

• (12,0)
• (12,12)
• (4,3)
• (0,12)

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CCSS.8.G.A.3

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.8.G.A.3