Scaling Up and Scaling Down Maps, Figures

Are the two figures similar?
(If yes, what is the similarity ratio?)

• Yes; 3

• Yes; 3/10

• Yes; 3/5

• No

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Determine the correct algebraic representation of the similar figures

• (x, y) -> (.5x, .5y)

• (x, y) -> (2x, 2y)

• (x, y) -> (x + 2, y + 2)

• (x, y) -> (x - .5, y - .5)

Tags

CCSS.HSG.CO.A.2

Select ALL that apply.

• Trapezoid ABCD is similar to Trapezoid A'B'C'D'.

• Trapezoid ABCD is NOT similar to Trapezoid A'B'C'D'.

• The scale factor of the dilation is 1/2 and centered at the origin.

• The scale factor of the dilation is 2 and centered at the origin.

• The scale factor of the dilation is 3 and centered at the origin.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

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

Are the two prisms similar? If yes, what is the scale factor.

• no

• yes

  3 : 4

• yes

  1 : 3

• yes

  6 ; 8

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Select ALL that apply.

• Dilation using 2 as scale factor followed by y-axis reflection.

• X axis reflection followed by dilation using scale factor of 2

• Y axis reflection followed by dilation using scale factor of 2

• 90 CCW rotation followed by dilation using scale factor of 2

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Even though the size of the image changed, which statement below explains why this is NOT an example of a dilation? (NOT similar figures)

• the width increased in size, but the height did not change at all (they must change the same way)

• the width of the image got larger, not smaller

• this is a dilation actually, because the image increased 3 times the original size

• these are not a dilation, because the two images are congruent

Mrs. Johns is preforming a transformation on a square. Which transformation results in a similar square, but not congruent to the original square?

• Rotation

• Reflection

• Translation

• Dilation

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

What transformations can be used to show circles I and J are similar?

• Dilate circle I about (4, 10) with scale factor 1/2 and then translate down 4 and left 6.

• Translate circle J right 4 and up 6 and then dilate about point (4, 10) with a scale factor 1/2

• Translate circle J left 6 and down 4 and then dilate about point (4, 10) with scale factor 2.

• Dilate circle I about (4, 10) with scale factor 1/2 and then translate left 4 and down 6.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

A triangle drawn on a coordinate grid is dilated by a scale factor of 5 about the origin. Which statement regarding the original triangle and the resulting image is correct?

• The two triangles are congruent, but not similar.

• The two triangles are similar, but not congruent

• The two triangles are similar and congruent

• The two triangles are neither similar or congruent.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2