Cpm Geometry Chapter 5 Review

How is triangle ABC being translated to triangle A'B'C'?

• up 3, left 8

• up 9, left 4

• down 3, right 8

• down 9, right 4

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CCSS.HSG.CO.A.2

Translations, reflections and rotations are all known as ________________________.

• Geometry

• Transformations

• Congruent

• Similar

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Name the transformation.

• Reflection (flip)

• Translation (slide)

• Rotation (turn)

• It didn't transform

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Name the transformation.

• Translation (slide)

• Rotation (turn)

• Reflection (flip)

• It didn't transform

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What are the coordinates of B' after a 270° clockwise?

• (4, 4)

• (4, -4)

• (-3, 4)

• (-4, 4)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The point ( -2,5) is reflected over the line x = 1.  Find its image.

• (  4,  5)

• ( -2  , -5)

• ( 2  ,  5)

• (2   , -5)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflect ΔXYZ over the y-axis.

X(0 , -3) ; Y(-2 , 4) ; Z(1 , 3)

• X'(0 , 3) ; Y'(-2 , -4) ; Z'(1 , -3)

• X'(0 , -3) ; Y'(2 , 4) ; Z'(-1 , 3)

• X'(-3 , 0) ; Y'(4 , -2) ; Z'(3 , 1)

• X'(0 , -3) ; Y'(-2 , 4) ; Z'(-1 , 3)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Rotate ΔPQR 90^o counterclockwise about the origin.

P(-5 , 2) ; Q(1 , 5) ; R(3 , -2)

• P'(-2 , -5) ; Q'(-5 , 1) ; R'(2 , 3)

• P'(2 , -5) ; Q'(5 , 1) ; R'(-2 , 3)

• P'(2 , 5) ; Q'(5 , -1) ; R'(-2 , -3)

• P'(-2 , 5) ; Q'(-5 , -1) ; R'(2 , -3)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

We have not talked about a dilation yet- but a dilation can either increase or decrease the size of and object. The center of dilation is the origin. Dilate ΔEFG given a scale factor of 3. (enlarge by a factor of 3) Here are the vertices: E(4 , 9) ; F(-3 , 12) ; G(2 , -8)

• E'(4/3 , 3) ; F'(-1 , 4) ; G'(2/3 , -8/3)

• E'(12 , 27) ; F'(-9 , 36) ; G'(6 , -24)

• E'(7 , 12) ; F'(0 , 15) ; G'(5 , -5)

• E'(1 , 6) ; F'(-6 , 9) ; G'(-1 , -11)

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CCSS.8.G.A.3

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which triangle shows the new location?

• A

• B

• C

• D

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5