Dilation Measurement

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

If a scale factor of ½ is applied, what would be the algebraic representation for this dilation.

• (x, y)--> (2x, 2y)

• (x, y)--> (1/2x, 1/2y)

• (x, y)--> (x+2, y+2)

• (x, y)--> (x-2, y-2)

Does the image show a dilation?

• Yes

• No

Every dilation has a fixed point called the_________

• reduction

• enlargement

• scale factor

• center of dilation 

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

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

• (-1, -2.5)

• (12, 6)

• (3, -1.5)

• (0, 1.5)

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

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

• ½

• ¼

• 4

• 2

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.

Enlargement or reduction?  Find the scale factor!

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

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

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

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