a |
b |
a |
b |
2 |
a |
b |
2 |
π |
4 |
2 |
2 |
π |
4 |
π |
4 |
| ||
2 |
π |
2 |
π |
4 |
π |
4 |
3π |
4 |
π |
4 |
π |
4 |
π |
4 |
1 |
2 |
| ||
4 |
2 |
2 |
| ||
2 |
2 |
2 |
2 |
| ||
2 |
10 |
a |
b |
a |
b |
a |
b |
A.
| B.
| ||||||||||||
C.
| D.
|
a |
b |
a |
b |
A.(-2,-1) | B.(-2,1) | C.(-1,0) | D.(-1,2) |
OA |
OB |
OC |
OA |
AC |
OB |
OC |
AB1 |
AB2 |
OB1 |
OB2 |
AP |
AB1 |
AB2 |
OP |
1 |
2 |
OA |
A.(0,
| B.(
| C.(
| D.(
|
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