Intro to Rigid Transformations Geometry

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• (y-8, x+5)

• (x+8, y-5)

• (x+5, y-8)

• (x+4, y-5)

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CCSS.HSG.CO.A.2

Which answer shows a reflection across the x-axis?

• d

• c

• b

• a

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

∆QRS contains the points: Q(4, 2) R(5, 1) S(3,7). If the triangle is reflected across the y-axis, what will S' be?

• S'(3, 7)

• S'(-3, 7)

• S'(-3, -7)

• S'(3, 7)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Triangle A is rotated 90° clockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 90° clockwise?

• (x,y)→(y, -x) 

• (x,y)→(-x,-y)

• (x,y)→(-y,x)

• (x,y)→(x,y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Identify the rule after a 180° CLOCKWISE or COUNTER CLOCKWISE
(x, y) ---> ___________

• ( -x, -y)

• ( -y, x)

• ( -x, y)

• (y, -x)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Is the picture being reflected in the y-axis or x-axis?

• y-axis

• x-axis

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A type of transformation where a figure is “flipped” over a line of symmetry. It produces a mirror image of a figure.

• rotation

• translation

• dilation

• reflection

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A transformation that “turns” a figure about a fixed point at a given angle and a given direction.

• rotation

• translation

• reflection

• dilation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The result of a transformation.

• Pre-image

• Image

• Post-Image

Tags

CCSS.HSG.CO.A.2