AE |
EB |
DF |
FC |
∴
AE |
EB |
DF |
FC |
∴
AB |
EB |
DC |
FC |
(2)∵
AE |
EB |
DF |
FC |
∴
EB |
AE |
FC |
DF |
∴
EB |
AE |
FC |
DF |
∴
EB+AE |
AE |
FC+DF |
DF |
∴
AB |
AE |
DC |
DF |
AE |
EB |
DF |
FC |
AB |
EB |
DC |
FC |
AB |
AE |
DC |
DF |
AE |
EB |
DF |
FC |
AE |
EB |
DF |
FC |
AB |
EB |
DC |
FC |
AE |
EB |
DF |
FC |
EB |
AE |
FC |
DF |
EB |
AE |
FC |
DF |
EB+AE |
AE |
FC+DF |
DF |
AB |
AE |
DC |
DF |