Week14-Unit 2C Dilations/Similarity

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CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Definition: The figure before a transformation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

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CCSS.HSG.CO.A.2

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

• reduction
• enlargement
• scale factor
• center of dilation

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CCSS.7.G.A.1

Does the image show a Dilation?

• Yes
• No

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CCSS.HSG.CO.A.2

• (-2,-2)
• (0,0)
• (1,1)
• (-2,-1)

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CCSS.HSG.CO.A.2

What is the value of X?

• X=4
• X=6
• X=3
• X=2

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CCSS.HSG.SRT.A.2

Are the triangles similar?

• Yes
• No

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CCSS.HSG.SRT.A.2

Are the triangles similar?

• Yes
• No

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CCSS.HSG.SRT.A.2

Find x

• 21
• 27/7
• 13
• 18

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CCSS.7.G.A.1

Let  $\Delta XYZ$ be the dilated image of  $\Delta ABC$ with a scale factor of k = 3. Which of the following is the correct center of dilation?

• (0, 0)

• (4, 1)

• (-5, 5)

• (1, 4)

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CCSS.8.G.A.3