1. April 30, 2009
Are the triangles
B similar? Why or why
not?
12
D
4
C
15 5
A
E

2. HW Review

6. On Your Own:
1. Draw a polygon
2. Draw another polygon that's similar
Partner (and you do this for his/hers):
1. Partner finds scale factor of polygons
2. Partner finds perimeter of polygons
3. Partner finds area of polygons

7. Ratio of Ratio of
Perimeters
Scale Factor Areas

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

9. HW: Find the perimeter of your room.
Pick a reasonable scale factor and
make a good copy (graph paper or
SketchUp) of your room.