Similar Figures, Indirect Measurement, Scale and Scale Facto

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

• 3.75
• 9.75
• 10
• 12

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

Find the perimeter of the large triangle.

• 24
• 36
• 12
• 54

Tags

CCSS.7.G.B.6

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet
• 21 feet
• 27 feet
• 32 feet

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Which side length corresponds with EF?

• ML
• LM
• OL
• EH

Tags

CCSS.7.G.A.1

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

• an enlargement
• a reduction
• a scale factor
• bigger

Tags

CCSS.7.G.A.1

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

• a reduction
• an enlargement
• a scale
• not proportional

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

CCSS.7.G.A.1

If the scale factor is 4, what is the measurement of slide length x?

• 21

• 1.25

• 20

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2