Scale Factor

What is the formula for scale factor?

• $\frac{new}{old}$

• $\frac{old}{new}$

What is the scale factor from triangle ABC to triangle DEF?

• 1/2
• 7/3
• 2/1
• 10/3

What is the scale factor from the smaller quadrilateral to the larger?

• scale factor = 4
• scale factor = 10
• scale factor = 3
• scale factor = 2

Find the value of x.

• 21.75

• 17.5

• 39.75

• 12.5

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

• 21
• 1.25
• 20
• 4

Find missing side

• 5
• 7
• 9
• 11

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

• 20 m
• 24 m
• 16 m
• 4 m

What is the scale factor from the large triangle to the small triangle?

• 1/2
• 2/3
• 3/4
• 2

What is the scale factor from the smaller quadrilateral to the larger?

• scale factor = 4
• scale factor = 10
• scale factor = 3
• scale factor = 2

What is the scale factor from shape A to shape B?

• 1
• 2
• 3
• 4