Scale Factor Perimeter Area

What is one way to determine how much the area would increase using a scale factor of 3?

• take the scale factor and square it to get 3x3=9

• add all of the sides together then multiply by 3

• multiply the area of the smaller rectangle by 3

Tags

CCSS.7.G.A.1

When multiplying by a scale factor the area will multiply by...

• The same scale factor

• The scale factor doubled

• The scale factor squared (to the power of 2)

  (scale factor x scale factor)

Tags

CCSS.7.G.A.1

A figure is multiplied by the scale factor 1/4. What will be the change in area?

• The area will be 1/4 the original area.

• The area will be 1/8 the original area.

• The area will be 1/16 the original area.

Tags

CCSS.7.G.A.1

A scale factor greater than one creates ....

• a reduction

• an enlargement

• an exact copy

• none of these

Tags

CCSS.8.G.A.3

If the perimeter is 8 times bigger, what scale factor was used?

• 64

• 8

• 16

• 4

Tags

CCSS.7.G.A.1

Calculate the value of the scale factor between the 2 triangles

• 2.5

• 3

• 3.5

• 4

Tags

CCSS.7.G.A.1

What is the scale factor if the triangle on the left is the original?

• 2

• 3/2

• 2/3

• 1/2

Tags

CCSS.7.G.A.1

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

Tags

CCSS.8.G.A.3

What is the value of X?

• X=4

• X=6

• X=3

• X=2

Tags

CCSS.HSG.SRT.A.2