Scale Factor

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.

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)

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.

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

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 2.
• It's a reduction; the scale factor is 2/3.
• It's an enlargement; the scale factor is 3/2.
• It's a reduction; the scale factor is 3.

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

If the scale factor is less than one (a fraction), the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

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

• a reduction

• an enlargement

• a scale

• not proportional

The two rectangles are scale drawings. What is the measurement of x?

• 21
• 1.25
• 20
• 4

Find side length X.

• 16
• 18
• 2.4
• 15