Intro to Scale Factor and Dilations

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

A dilation creates a similar figure.

• True

• False

Tags

CCSS.8.G.A.3

A scale factor of 1/2 reduces a figure.

• True

• False

Tags

CCSS.8.G.A.3

A dilation can produce a smaller figure also known as a ______

• reduction

• enlargement

• scale factor

• center of dilation

Tags

CCSS.8.G.A.3

 A dilation can produce a larger figure also known as a ______

• reduction

• enlargement

• scale factor

• center of dilation

Tags

CCSS.8.G.A.3

Triangle DOG has coordinates D (0,0) O (0,4) and G ( 1,5) where is O' after a dilation of scale factor 7

• (7,35)

• (7,28)

• (0,28)

• (0,0)

Tags

CCSS.8.G.A.3

Triangle CAT has coordinates C (4,8) A (6,10) and T ( 6,4) where is A' after a dilation of scale factor of 1/2 

• (6,10)

• (3,2)

• (3,5)

• (0,0)

Tags

CCSS.8.G.A.3

In a DILATION, everything about the two shapes/images is congruent (same) except...

• size

• angles

• the type of shape

Tags

CCSS.8.G.A.3

Which scale factor below would result in a dilation that is smaller than the pre-image?

• 0.5

• 3.5

• 2

• 4

Tags

CCSS.8.G.A.3

A dilation that increases in size will always have a scale factor that is...

• negative

• exactly 1

• greater than 1

• less than 1

Tags

CCSS.8.G.A.3