1. May 1, 2009
Find the values of the variables.
4
30o
g
12
x
k
o
45
y

3. Ratio of Ratio of
Perimeters
Scale Factor Areas

4. same as
Ratio of Perimeters
scale factor
2
same as
( )
Ratio of Areas
scale factor

5. The following rectangles are similar.
18 feet
10 feet
A) What is the ratio of the perimeters?
B) What is the ratio of the areas?

6. A = 128 in2
16 in
10 in
What's the area?

7. The two diamonds are similar.
2
A= 95 cm
10 cm 18 cm
What's the perimeter?
What's the area?

8. The two triangles are similar.
The scale factor is 4:3
2
A = 42 ft
x
4 ft

9. HW: pg. 740 # 3­11, 13, 14, 23