Scaling Figures Vocabulary

an increase according to a fixed ratio

• Scale

• Scaling down

• Scale Factor

• Scaling Up

a ratio comparing the size in the drawing or model to that of the one in real life

• Rate

• Scale

• Ratio

• Scale Factor

figures that have the same shape, but are not the same size

• Similar Figures

• Proportional

• Scale Factor

• Constant of Proportionality

a decrease according to a fixed ratio

• Scale

• Scaling Down

• Scaling Up

• Scale Decrease

The blue triangle is the preimage, the green triangle is the image.

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

• an enlargement

• 2

• a reduction

• 5

• 4

The table describes two dilations with the center of dilation at the origin. Which rule describes each dilation?

Match the following

• ( 5x, 5y)

• Dilation

  Enlargement 5

• ( 2x, 2y)

• Dilation

  scale factor of 1/3

• Dilation

  scale factor of 2

• Dilation

  Reduction of 5

What is the scale factor?

• 4

• 25

• 5

• 6

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

Match the following

• A (1,1) B (2,2) C (3,3)

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

• Scale factor of 1/3

• A (2,2) B (3,3) C (4,4)

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

• Scale factor of 3

• 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' (6,6) B' (9,9) C' (12,12)

• Scale factor of 1/2

• A (2,2) B (3,3) C (4,4)

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

• Scale factor of 2