Dilations With Tables

What is the scale factor if the triangle on the left is the original?

• 2

• 3/2

• 2/3

• 1/2

What is the scale factor if the smaller rectangle is the original rectangle?

• 4

• 25

• 5

• 6

What is the scale factor used to dilate the small square to the larger square given there areas?

• 4

• 16

• 3

• 12

Find the measure of x:

• 6

• 24

• 33

• 36

The scale factor for this dilation is:

Mathematical Equivalence

ON

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

• reduction

• enlargement

• scale factor

• center of dilation

If a rectangle is drawn and another rectangle is drawn so that the sides are twice as big as the first rectangle, what happens to the area?

• doubles

• triples

• quadruples

• not enough information

Figures A and B are similar.  Which transformation of figure A shows that A and B are similar?

• Translation 3 units up

• Translation 3 units down

• Dilation by a scale factor of 3

• Dilation by a scale factor of 1/3

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?

• A'(9,9) B'(18,18) C'(27,9)

• A'(6,6) B'(9,9) C'(12,6)

• A'(0,0) B'(3,3) C'(6,0)

• A'(1,1) B'(2,2) C'(3,1)

Which rule shows the transformation?

• (x, y) ----> (0.5x, 0.5y)

• (x, y) ----> ( 2 + x, 2 + y)

• (x, y) -----> (2x, 2y)

• (x, y) -----> (3x, 3y)