a |
b |
a |
b |
a |
b |
A.(4,24) | B.(-8,24) | C.(-8,12) | D.(4,-12) |
a |
b |
a |
b |
b |
a |
b |
AP |
AB |
AF |
A.[1,2] | B.[2,3] | C.[2,4] | D.[3,4] |
OA |
OB |
OC |
AB |
OC |
A.-
| B.-
| C.
| D.
|
OC |
OA |
OB |
A.(
| B.(1,3) | C.(
| D.(
|
AB |
AD |
AO |
a |
b |
a |
c |
a |
b |
c |
3 |
c |
a |
b |
A.1 | B.-1 | C.2 | D.-2 |
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