CCSS.Math.Content.8.G.A.4

A square has a side length of 5 1/2 inches. This square is dilated by a scale factor of 4/5 to create a new square. What is the side length of the new square?

• 4 4/5 in.
• 4 1/4 in
• 4 2/5 in
• not here

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CCSS.Math.Content.8.G.A.4

Image                         Pre-image
A   B   C                    A    B    C  
    8   9   6                    56   63   42 
    2   5   -3                 14   35   -21

What is the scale factor that shows the dilation from the pre-image to the image?

• 1/7
• 7/2
• 7/1
• 7.5

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CCSS.Math.Content.8.G.A.4

A shape is translated 3 units to the left. What is true about the pre-image figure and the prime image figure?

• The pre-image and the prime image will create similar figures.

• The pre-image will be slightly larger than the prime image.

• The pre-image and the prime image will create congruent figures.

• The pre-image will be slightly smaller than the prime image.

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CCSS.Math.Content.8.G.A.4

CCSS.Math.Content.8.G.A.2

If two figures are similar, the corresponding sides are ______________.

• equal
• congruent
• proportional
• none of these

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CCSS.Math.Content.8.G.A.4

Changing a figure by translating, rotating, reflecting, or dilating is called a...

• drawing

• transformation

• geometry

• slide

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CCSS.Math.Content.8.G.A.4

CCSS.Math.Content.8.G.A.2

In the figure above, which of the following ratios has the same value as  $\frac{AB}{BC}$  

• 
  

   $\frac{BD}{DC}$  
  

•  $\frac{BC}{AC}$  

•  $\frac{AD}{BD}$  

•  $\frac{DC}{BC}$  

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CCSS.Math.Content.8.G.A.4

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.Math.Content.8.G.A.4

Rectangle ABCD has a length of 6 and a height of 5. It is dilated by a scale factor of 3.

What is true about the perimeter of A'B'C'D', the new rectangle?

• The perimeter of A'B'C'D' is the same as the perimeter of ABCD

• The perimeter of A'B'C'D' is the 3 times larger than the perimeter of ABCD

• The perimeter of A'B'C'D' is the 6 times larger than the perimeter of ABCD

• The perimeter of A'B'C'D' is the 9 times larger than the perimeter of ABCD

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CCSS.Math.Content.8.G.A.4

If a shape is dilated, how do you find the new area?

• You multiply the old area by the scale factor used in the dilation.
• You square the scale factor used in the dilation. Then multiply the old area by the squared scale factor.

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CCSS.Math.Content.8.G.A.4

The original figure prior to a transformation.

• Pre-image
• Image

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CCSS.Math.Content.8.G.A.4