Week 9: Dilations Day 1

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.
• It's an enlargement; the scale factor is 2.
• It's an enlargement; the scale factor is 1/2.
• It's a reduction; the scale factor is 1/2.

Tags

CCSS.8.G.A.3

If the scale factor is greater than 1, the dilation is...

• an enlargement
• a rotation
• a translation
• a reduction

Tags

TEKS.MATH.G.3A

If the scale factor is less than 1, the dilation is...

• an enlargement
• a translation
• a rotation
• a reduction

Tags

CCSS.8.G.A.3

A dilation creates a similar figure.

• True
• False

Tags

CCSS.8.G.A.3

If a line segment has a length of 12 units and after a dilation the image length is 4 units, what was the scale factor?

• 3
• 1/3
• 8

Tags

CCSS.8.G.A.3

The "image" is the shape before the dilation.

• 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

What scale factor was used to produce the image?

• 1
• 7
• 18
• 49

Tags

CCSS.8.G.A.3