1. EXAMPLE 1
Describe a dilation
FEG is similar to FDH. Describe the dilation that moves FEG onto FDH.
SOLUTION
The figure shows a dilation with center F.
The scale factor is 2 because the ratio of FH to FG is 20 : 10, or 2 : 1.

2. GUIDED PRACTICE
for Examples 1 and 2
The two figures are similar. Describe the transformation(s) that move the blue figure onto the red figure. 1. 2.
ANSWER
ANSWER 2 3
dilation with center
B and scale factor
dilation with scale factor
and reflection 7 3

3. Daily Homework Quiz
Describe the dilation that moves the smaller figure onto the larger figure. 1.
ANSWER
dilation with scale factor 3 and center at the intersection of the thin lines

4. Daily Homework Quiz
Describe the dilation that moves the smaller figure onto the larger figure. 2. 8 5
ANSWER
dilation with scale factor and center at center of the circles

5. Daily Homework Quiz
The coordinates of the vertices of a ABC and its image DEF are given. Describe the transformation(s) that move ABC figure onto DEF.
A(1, 1), B(–2, 2), C(2, 2);
D(2, –2), E(–4, –4), F(4, –4)
SAMPLE ANSWER
dilation with center (0, 0) and scale factor 2, then reflection in the x-axis