Scale Factor Perimeter and Area

Calculate the value of the scale factor between the 2 triangles

• 2.5

• 3

• 3.5

• 4

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 greater than one, the new figure will be

• reduction

• enlargement

• scale

• not proportional

Tags

CCSS.8.G.A.3

The pair of figures is similar. Find the missing side.

• x = 1

• x = 3

• x = 9

• x = 5

Tags

CCSS.HSG.SRT.A.2

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

Tags

CCSS.7.G.A.1

George drew a rectangle EFGH. He enlarged the rectangle by a scale factor of 2 and labeled it JKLM. What is the perimeter of rectangle JKLM?​ (a)  

• 64 cm

• 32 cm

• 48 cm

• 120 cm

Tags

CCSS.7.G.A.1

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

scale factor = _______

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

Find the ratio (blue to red) of the perimeter.

• 4/7

• 7/4

• 49/16

• 16/49

Find the ratio (blue to red) of the area.

• 4/7

• 7/4

• 49/16

• 16/49

Find missing side

• 5

• 7

• 9

• 11

Tags

CCSS.HSG.SRT.A.2