OA |
OB |
OC |
0 |
A.
| B.
| C.
| D.
|
OA |
OB |
OC |
0 |
OA |
OB |
OC |
OA |
OB |
OC |
OA |
OB |
OA |
OB |
π |
2 |
π |
4 |
a |
b |
c |
a |
a |
b |
b |
a |
c |
b |
c |
b |
c |
b |
A.
| B.
| C.
| D.1 |
a |
b |
a |
b |
π |
2 |
3 |
4 |
AP |
1 |
2 |
AB |
1 |
2 |
AC |
1 |
6 |
BC |
A.△ABC的一边上 | B.△ABC的一顶点处 |
C.△ABC的外部 | D.△ABC的内部 |
AB |
AC |
AB |
A.7 | B.4 | C.3 | D.2 |
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