CPM Geometry Review

Translations, reflections and rotations are all known as ________________________.

• Geometry

• Transformations

• Congruent

• Similar

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Name the transformation.

• Reflection (flip)

• Translation (slide)

• Rotation (turn)

• It didn't transform

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Name the transformation.

• Translation (slide)

• Rotation (turn)

• Reflection (flip)

• It didn't transform

Tags

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)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the reason for statement 5? Hint: After you prove that triangles are congruent, then all corresponding parts are congruent.

• SSS

• CPCTC

• Reflexive Property

• Given

Tags

CCSS.HSG.SRT.B.5

What does CPCTC stand for?

• Corresponding Parts of Congruent Triangles are Congruent

• Congruent Parts of Congruent Triangles are Corresponding

• Corresponding Parts of Canadian Triangles are Cool

• Congruent Parts of Corresponding Parts are Corresponding

Tags

CCSS.HSG.SRT.B.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)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

TRY THIS ONE FOR FUN- 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)

Tags

CCSS.8.G.A.3

A Triangle has vertices at A (1,3), B (2,4), and C (3,8). Which transformation would produce an image with vertices A'(3,-1), B'(2,-4), C'(8,-3)?

• Reflection over X Axis

• Reflection over Y Axis

• 90 degree CW rotation

• 90 degree CCW rotation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5