Similarity Transformations

What will the new coordinates of D(4,6) be after a dilation centered at the origin with a scale factor of 1/2

• D'(2,6)

• D'(4,3)

• D'(-2,-3)

• D'(2,3)

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CCSS.8.G.A.3

CCSS.8.G.A.4

What is the scale factor of this dilation?

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CCSS.8.G.A.1

CCSS.8.G.A.3

CCSS.8.G.A.4

Which of the statements is true about the graphed triangles?

• They are similar, because one can be obtained by dilating the other about the origin with a scale factor of 2.
• They are similar, because one can be obtained by dilating the other about the origin with a scale factor of 1/2.
• They are not similar, because one can be obtained by dilating the other about the origin with a scale factor of 2.
• They are not similar, because one can be obtained by dilating the other about the origin with a scale factor of 1/2.

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CCSS.8.G.A.3

CCSS.8.G.A.4

The pair of figures is similar. Find the missing side.

• x = 20
• x = 12
• x = 5
• x = 4

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CCSS.8.G.A.4

CCSS.8.G.A.5

What makes isometric (rigid) transformations different than similarity transformations?

• Isometric transformations have the same shape AND size, similarity transformations just have the same shape.

• Isometric transformations are cooler

• Isometric transformations have the same shape AND size, similarity transformations just have the same size.

• They are the same, no differences.

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CCSS.8.G.A.2

CCSS.8.G.A.3

CCSS.8.G.A.4

Pentagon ABCDE is similar to Pentagon RYMNT. Which of the following is correct.

• ∠C ≅ ∠M

• ∠T ≅ ∠E

• ∠Y ≅ ∠B

• ∠A ≅ ∠M

• ∠C ≅ ∠R

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CCSS.8.G.A.1

CCSS.8.G.A.4

CCSS.8.G.A.5

Pentagon ABCDE is similar to Pentagon RYMNT. Which of the following is/are correct (choose all that apply).

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CCSS.8.G.A.3

CCSS.8.G.A.4

Quad OBCD is similar to Quad OHTE because:

• Quad OBCD can be reflected over the x axis and then rotated 90 degrees

• Quad OBCD can be reflected over the x-axis and then dilated about point O by a scale factor of 2.

• Quad OBCD can be reflected over the y-axis and then dilated about point O by a scale factor of 2.

• Quad OBCD can be reflected over the y-axis and then dilated about point O by a scale factor of 1/2.

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CCSS.8.G.A.3

CCSS.8.G.A.4

ΔOBC is similar to ΔOGT because: (choose the best answer)

• ΔOBC can be dilated about point O by a scale factor of 1/2, and then rotated 90 degrees about point O.

• ΔOBC can be dilated about point G by a scale factor of 1/2, and then reflected over the x- axis

• They aren't similar

• They map to each other with similarity transformations.

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CCSS.8.G.A.3

CCSS.8.G.A.4

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Tags

CCSS.8.G.A.4