Finding Scale Factor Geometry

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

• 1/3

• 48

• 4

• 3

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

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

• 2

• 3/2

• 2/3

• 1/2

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

Enlargement or reduction?  Find the scale factor!

Hint: to find the scale factor write a ratio of your image to pre-image coordinate.

• It's a reduction; the scale factor is 2.

• It's an enlargement; the scale factor is 2.

• It's an enlargement; the scale factor is 1/2.

• It's a reduction; the scale factor is 1/2.

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.

• It's an enlargement; the scale factor is 2.

• It's an enlargement; the scale factor is 1/2.

• It's a reduction; the scale factor is 1/2.

• 0.25
• 0.5
• 2
• 1/2

What is the scale factor?

• 4

• 25

• 5

• 6

What is the scale factor from the small shape to the big shape?

• 1/2

• 7/3

• 2

• 10/3