Scale Factor of Two Figures

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

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

• x = 10

• x = 4

• x = 2

• x = 5

The triangles are similar, solve for the question mark.

• 8

• 12.5

• 18

• 24

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary 

What is the scale factor?

• 4

• 25

• 5

• 6

Determine the scale factor. Then, find the value of x. ( _ /4)

• 4

• 0.25

• 5

• 6

What is the scale factor?

• 4

• 25

• 5

• 6

Match the following

• A (2,2) B (3,3) C (4,4)

  A' (1,1) B' (1.5,1.5) C' (2,2)

• Scale factor of 1/3

• A (1,1) B (2,2) C (3,3)

  A' (5,5) B' (10,10) C' (15,15)

• Scale factor of 3

• A (2,2) B (3,3) C (4,4)

  A' (6,6) B' (9,9) C' (12,12)

• Scale factor of 2

• A (3,3) B (6,6) C (9,9)

  A' (1,1) B' (2,2) C' (3,3)

• Scale factor of 5

• A (2,2) B (3,3) C (4,4)

  A' (4,4) B' (6,6) C' (8,8)

• Scale factor of 1/2

The image shows​​ (a)   and the scale factor is​​ (b)   ​

• an enlargement

• 3

• a reduction

• 5

• 4

• 2

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

• an enlargement

• a reduction

• a scale factor

• bigger