Scale Factor and Scale

What is the scale factor if the triangle on the left is the original?

• 2
• 3/2
• 2/3
• 1/2

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

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

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

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

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

What is the scale factor from ABCD to MNOP?

• 2/3
• 3/2
• 2
• 3

What is the scale factor from MNOP to ABCD?

• 2/3
• 1/2
• 3/2
• 2

• 0.25
• 0.5
• 2
• 1/2

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

Henry drew a picture of his house. The actual width of the driveway is 20 feet. If it's represented with a width of 4 inches on the drawing, what was the scale factor used?

• 5

• 1/5

The base of my original figure was 4.5cm. The base of my enlarged figure is 6cm. What is the scale factor?

• 1 and 1/3

• 3/4