Dilation, Scale Factor

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True

• False

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True

• False

How do you write the algebraic notation when the scale factor is 1/2?

• (x, y) goes to (2x, 2y)

• (x, y) goes to (1/2x, 1/2y)

• (x, y) goes to (-2x, -2y)

• (x, y) goes to (2x, 1/2y)

In a dilation what mathematical operation is used with the scale factor?

• addition 

• subtraction 

• multiplication 

• division 

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

If your SF = 0.8, what type of dilation is it?

• Reduction

• Enlargement

If your SF = 2.5, what type of dilation is it?

• Reduction

• Enlargement

If your SF = 6/5, what type of dilation is it?

• Reduction

• Enlargement

If your SF = 7/7, what happens to the figure when dilated?

• reduced

• enlarge

• preserve

• It turns into an octopus

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

• 1/2

• 7/3

• 2

• 10/3