Dilations Practice

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

• Reduction

• Enlargement

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Rectangle ABCD is dilated so that the coordinates of C' are (2, -1).  What could be the dilation rule?

• (-2x, +1y)

• (1/2 x, 1/2 y)

• (2x, 2y)

• (x - 2, y - 1)

Dilation rules use ______________ to change the ___________ of a shape. 

• addition; location

• division; direction

• subtraction; orientation

• multiplication; size

A dilation does which of the following? Choose all that apply.

• Can make an enlargement.

• Can make a reduction.

• Always makes a similar figure.

• Always makes a congruent figure.

• Uses a scale factor.

Which of the following rules could NOT be used to represent a dilation with a scale factor of 1/4?

• The figure was translated 2.6 units to the right and 2.6 units up.
  

• The sides of the image were reduced by a scale factor of 2.6.

• The sides of the image were enlarged by a scale factor of 2.6.

• The image is a reflection of the original.