Dilations: Verbal Description & Rule

A dilation is which of the following:

• only an enlargement

• only a reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

Tags

CCSS.8.G.A.3

A dilation produces a congruent figure. (congruent means same shape, same size)

• True

• False

Tags

CCSS.8.G.A.3

If coordinates A(3, 6) is dilated by a scale factor of 2, what are the new coordinates of A' ? (hint: you are multiplying A(3, 6) by 2)

• (3, 6)

• (1.5, 3)

• (6, 12)

• (12, 6)

Tags

CCSS.8.G.A.3

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

Tags

CCSS.8.G.A.3

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

Tags

CCSS.8.G.A.3

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

Tags

CCSS.8.G.A.3

Similar figures have the same ______ but different ______. 

• measure; shapes
• sizes; shapes
• value; measures
• shape; sizes

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Definition: The figure before a dilation has occurred.

• Pre-image

• Image

• Translation

• Reflection

Tags

CCSS.8.G.A.3

Did the image enlarge, reduce or none of the above? (Remember, the image with the dashes next to the letters is the new image, A'B'C'.)

• Enlarge

• Reduce

• None of the above

Tags

CCSS.HSG.CO.A.2

Triangle ABC was dilated to create A'B'C'. Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge

• Yes, reduce

• No

Tags

CCSS.8.G.A.3