Similarity and Scale Factor

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 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

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

If the original is 12 units and the scale factor is 1/4 what is the size of the scale drawing?

• 300
• 4.8
• 3
• 4

What is the value of X?

• x = 2

• x = 3

• x = 6

• x = 7

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

• x = 9

• x = 28

• x = 63

• x = 7

Are the triangles similar?

• Yes
• No

What does similar mean?

• same shape and same size

• same size

• same shape

• neither

What does congruent mean?

• same shape and same size

• same size

• same shape

• neither