Rotation & Dilation

An office supply store sells index cards in two different sizes. The large size is a dilation of the small size. Both sizes are shown. Find the scale factor of the dilation.

• 0.5

• 5

• 3

• ⅓

Tags

CCSS.8.G.A.3

Rotate the point (5,5) around the origin 180 degrees. State the image of the point.

• (5,-5)

• (5,5)

• (-5,5)

• (-5,-5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

Tags

CCSS.8.G.A.3

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Tags

CCSS.8.G.A.3

The scale factor for this dilation is:

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor k = 2.

• (2,4.5)

• (-8,-18)

• (8,18)

• (9,4)

Tags

CCSS.8.G.A.3

A turn is also called a ___________.

• Translation

• Reflection

• Rotation

• Transformation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How many degrees was the figure rotated?

• 90 degrees counterclockwise 

• 180 degrees

• 270 counterclockwise 

• 90 degrees clockwise

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Rotate ΔPQR 270^o counterclockwise about the origin.

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

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

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

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

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

Tags

CCSS.8.G.A.3