Similar Figures and Scale Factor

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75
• 9.75
• 10
• 12

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

A triangle has sizes measuring 11 cm, 16 cm, and 16 cm. A similar triangle has sides measuring x cm, 24 cm, and 24 cm. What is x?

• x = 19 cm
• x = 24 cm
• x = 3 cm
• x = 16.5 cm

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

All angles in similar figures are congruent.  

• True
• False

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

Find missing side

• 5
• 7
• 9
• 11

Tags

CCSS.7.G.A.2

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

• x = 9
• x = 28
• x = 7
• x = 63

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Find the perimeter of the large triangle.

• 24
• 36
• 12
• 54

Tags

CCSS.7.G.B.6

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

• x = 20
• x = 12
• x = 5
• x = 4

Tags

CCSS.HSG.SRT.B.5

Solve for X.

• 2 ft
• 3 ft
• 4 ft
• 6 ft

Tags

CCSS.7.EE.B.4

A picture of a school’s mascot is 18 in. wide and 24 in. long. It is enlarged proportionally to banner size. If the width is enlarged to 54 in., what is the length of the banner? 

• 72 in
• 60 in
• 62 in
• 80 in

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3