AB |
a |
AD |
b |
AA′ |
c |
a |
b |
c |
AP |
AM |
AN |
AQ |
AP |
1 |
2 |
AC |
AA′ |
1 |
2 |
AB |
AD |
AA′ |
1 |
2 |
a |
b |
c |
AM |
1 |
2 |
AC |
AD′ |
1 |
2 |
AB |
AD |
AA′ |
1 |
2 |
a |
b |
c |
AN |
1 |
2 |
AC′ |
AD′ |
1 |
2 |
AB |
AD |
AA′ |
AD |
AA′ |
1 |
2 |
AB |
AD |
AA′ |
1 |
2 |
a |
b |
c |
AQ |
AC |
CQ |
AC |
4 |
5 |
AA′ |
AC |
1 |
5 |
AC |
4 |
5 |
AA′ |
1 |
5 |
AB |
1 |
5 |
AD |
4 |
5 |
AA′ |
1 |
5 |
a |
1 |
5 |
b |
4 |
5 |
c |
i |
j |
k |
a1 |
i |
j |
k |
a2 |
i |
j |
k |
a3 |
i |
j |
k |
a4 |
i |
j |
k |
a4 |
a1 |
a2 |
a3 |
a |
b |
a |
b |
a |
b |
π |
2 |
π |
4 |
OC |
CA |
2 |
2 |
. |
OA |
A.3 | B.3
| C.
| D.18 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
b |
a |
AB |
BC |
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