Dilations

What is the scale factor of a dilation that enlarges a figure by a factor of 2?

• 2

• 0.5

• 1

• 3

Tags

CCSS.8.G.A.3

A triangle is dilated with a scale factor of 3. If the original triangle has a perimeter of 18 cm, what is the perimeter of the dilated triangle?

• 6 cm

• 54 cm

• 9 cm

• 36 cm

Tags

CCSS.8.G.A.3

Triangle PQR is similar to triangle DEF shown. Which describes the relationship between the corresponding sides of the two triangles?

• 
• 
• 
• 

Tags

CCSS.HSG.SRT.A.2

A triangle has a perimeter of P units. The triangle is dilated by a scale factor of 1/2.

Which expression could represent the perimeter of the new shape?

• 2P units

• 4P units

Tags

CCSS.7.G.A.1