Dilations About the Origin

Which of the following are true about dilations? Select all that apply.

• Dilations have the same shape as the original.

• Dilations can be enlargements of the original image.

• Dilations can be reductions of the original image.

• Dilations are always congruent.

Tags

CCSS.8.G.A.3

What is the scale factor?

• 2

• 1/2

• (1,2)

• (2,1)

Tags

CCSS.8.G.A.3

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.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

What is the scale factor of this dilation?

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

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.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Square A is a Dilation of Square B. What is the scale factor of the squares?

• 1/7

• 4/5

• 5/4

• 7

Tags

CCSS.8.G.A.3

True or false, when a figure is dilated, the corresponding angles are congruent?

• True

• False

Tags

CCSS.8.G.A.3

 A dilation can produce a larger figure or a(n)______

• reduction

• enlargement

• scale factor

• center of dilation

Tags

CCSS.8.G.A.3

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

• Congruent

• Vertical

• Similar

• Complementary 

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

Tags

CCSS.7.G.A.1