Dilation Review

Triangle ABC with coordinates A(3,3) B(6,6) C(9,3) was dilated from the origin by a scale factor of 3. What are the coordinates of triangle A'B'C'?

• A'(9,9) B'(18,18) C'(27,9)

• A'(6,6) B'(9,9) C'(12,6)

• A'(0,0) B'(3,3) C'(6,0)

• A'(1,1) B'(2,2) C'(3,1)

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

The point C with coordinates (8, 12) was dilated to become point C' (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

A dilation is which of the following:

• process to make an object shrink

• process to make an object shrink by a sequence

• process to make enlarge an object

• process to either enlarge or shrink an object

A dilation produces a similar figure

• True
• False

When a figure undergoes a dilation the shape changes but the angles and size stay the same.

• True

• False

Triangle ABC will be dilated by a scale factor of 1/2. What will be the coordinates of C'?

• (-1, -2 1/2)

• (12, 6)

• (3, -1 1/2)

• (0, 1/2)

If the scale factor is less than 1, the dilation is...

• an enlargement

• a translation

• a rotation

• a reduction

Quadrilateral RSTV is dilated so that the coordinates of S' are (3, 9).  What was the scale factor of the dilation?

• 0.6
• (1, 3)
• 3/2
• 3

Triangle ABC is dilated so that the coordinates of C' are (2, -1).  What was the scale factor of the dilation?

• 3
• 2
• 1/2
• 1/3