9.6 Dilations

9.6 Dilations

Multiple Choice

• A

• B

• C

• D

Multiple Choice

PUPPETS Suppose you have a similar situation with the puppet and light source. The distance between the light source L and the puppet is 30 inches (LP). To what distance should you place the puppet from the screen to create a 54-inch tall shadow (I'M') from a 6-inch puppet?

• 100 inches

• 180 inches

• 220 inches

• 240 inches

Multiple Choice

• A

• B

• C

• D

Check your understanding...

Multiple Choice

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)

Multiple Choice

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.

Multiple Choice

 $\Delta LMN$  with vertices L(2, -8), M (12, 8), and N (14, -4). What are the vertices of  $D_{\frac{1}{2}}\left(\Delta LMN\right)$  ?

• L' (1, 4) M' (6, 4) N' (7, -2)

• L' (4, -16) M' (24, 16) N' (28, -8)

• L' (1, -4) M' (6, 4) N' (7, -2)

• L' (-1, -4) M' (-6, -4) N' (-7, -2)

Multiple Choice

Triangle ABC with vertices A(3,3) B(6,6) C(9,3). What are the vertices of  $D_3\left(\Delta ABC\right)$  ?

• 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)

Multiple Choice

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

• Enlarge
• Reduce
• None of the above

Multiple Choice

A dilation is which of the following:

• only an enlargement

• only a reduction

• either an enlargement or a reduction

• neither an enlargement nor a reduction