Dilations and Scale Factor

What is the scale factor from the small shape to the big shape?

• 1/2
• 7/3
• 2
• 10/3

If the blue polygon is the original image, find the scale factor and determine if it is a reduction or enlargement.

• 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.

What is the scale factor?

• 1

• 2

• 1/2

• -2

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

• an enlargement
• a reduction
• a scale factor
• bigger

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

• ½

• ¼

• 4

• 2

A dilation produces a similar figure

• True
• False

Did the image enlarge, reduce or none of the above?

• Enlarge
• Reduce
• None of the above

How do you write the algebraic notation when the scale factor is 3?

• (x, y) goes to (1/3x, 1/3y)
• (x, y) goes to (-3x, -3y)
• (x, y) goes to (x + 3, y + 3)
• (x, y) goes to (3x, 3y)

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

• a reduction
• an enlargement
• a scale
• not proportional

A dilation always produces a similar figure. Similar figures have the same ______ but different ______. 

• measure; shapes
• sizes; shapes
• value; measures
• shape; sizes