Lesson on Scale Factor

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

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

Tags

CCSS.8.G.A.3

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

The distance between two cities on a map is 4.125 inches.  Find the actual distance if the scale on the map is 2 inches = 40 miles.

• 165 miles
• 50 miles
• 82.5 miles
• 41.25 miles

Tags

CCSS.6.RP.A.3B

• 0.25
• 0.5
• 2
• 1/2

Tags

CCSS.7.G.A.1

A scale drawing that measures 8 units wide and an original that measures 4 units wide has a scale factor of...

• 2:1
• 8:1
• bigger
• 1:2

Tags

CCSS.7.G.A.1

Which triangle is similar to the above triangle ?

• A
• B
• C
• D

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Amanda made a scale drawing of a square garden, which has a side length of 25 feet. She used the scale 2 inches = 5 feet.

What will be the area of the scale drawing?

• 10 in²
• 25 in²
• 100 in²
• 484 in²

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.8.G.A.3

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

• 21
• 1.25
• 20
• 4

Tags

CCSS.7.G.A.1

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet

• 3 feet

• 3/4 feet

• 4 feet

Tags

CCSS.7.G.A.1