A' B'
C'
D'
D
C
A Ba
c
b
a)
A
B
C
G
H
D
E F
b)
D
C
B
A
A
B
N
M
C
D
Q
P
V
2

2
h
1
= 4
A
1
B
1
C
1
D
1
A
B
C
D
P
1
2 cm
4 cm
3

c
m
Q
P
A
A
B
C

KB
A I
G
D
C
F
G
B
A
D E
H
A
H
D
E
B
G
C
F
b) c)