mathematics similar and congruent figures slides

1. Similar and Congruent Figures

2. Similar and Congruent Figures
• Similar figures have the same shape, but not
the same size. They must have the same ratio
of side lengths
• Congruent figures have the same shape and
the same size
• Corresponding parts are the sides or angles
that have the same position.

3. • The symbol means that the shapes are
similar
• The symbol means that the shapes are
congruent
≅

4. Similar Triangles

5. Similar Triangles
3
4
5
6
10
8
What is the ratio of sides?

6. Congruent Figures
A
B
C
D
E
F
12
8
What is the length of EF
What is the length of BC

7. Similar Figures
A
B
C
D
E
F
G
H
FIGURE 1
Figure 2
Side AB is similar to side ________
Side BD is similar to side ________

8. Similar Figures
A
B
C
D
E
F
G
H
FIGURE 1
Figure 2
What is the ratio of the sides________
What is the length of side AC?
15
10
6
12
What is the length of side EH?