BC |
BA |
BP |
A.
| B.
| C.
| D.
|
BC |
BA |
BP |
BC |
BP |
BP |
BA |
PC |
AP |
PC |
AP |
0 |
PC |
PA |
0 |
OA |
a |
OB |
b |
OP |
a |
OQ |
b |
1 |
m |
1 |
n |
A.0.5 | B.-0.5 | C.5.5 | D.-5.5 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A.10 | B.20 | C.21 | D.30 |
OA |
OB |
OC |
OD |
A.
| B.2
| C.3
| D.4
|
AB |
a |
b |
BC |
a |
b |
CD |
a |
b |
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