b

1
??????? ?????????

??????? ???????? ????? ????????????? ??? ??? ?26
?.????????
2
???????? ???????????? ????????? ? ?????????????
b
a
a. ??? ????? ???????????
b. ???? ????? ???????????
c. ???????????? ???????? ???????
c
d
d. ???????????? ???????? ?????????
3
???????????

• ???? ???????????? ????????????? ? ?????????
  ???????? ?????????????, ?? ?? ?????????? ????????
  ????????????? ????????? ??????????

4
????? ?????? ?????? ?1 ??? ???????? SMCB.
????????? ??????? ????????? ??????????,
?????????? ????? ????? M, N, P. ????????, ??? N
? SC, P ?BC
5
1)ß ? SMCMN
2)ß ? SCBNP
3)ß ? MCBMP.
MNP ??????? ???????
6
????? ?????? ?????? ?2 ??? ???????? SMCB.
????????? ??????? ????????? ??????????,
?????????? ????? ????? M, N, P. ????????, ??? N
?SMC P?MSB
7
S
N1
N
P1
P
B
M
1)ß ? SMCMN1
2)ß ? SMBMP1
C
3)ß ? SCBN1P1
MN1P1 ??????? ???????
8
????? ?????? ?????? ?3 ??? ???????? SMCB.
????????? ??????? ????????? ??????????,
?????????? ????? ????? M, N, P. ????????, ??? N
?AB, P?AD, M ?BC
9
A
N
P
F
D
K
B
1)ß ? ABCMN
M
2)ß ? ABDNP
C
3)NP ? BDF
4) ß ? BCDMK
MNPK ??????? ???????
5) ß ? ACDKP
10
??????? ?? ????, ????!