. |
a |
. |
OA |
. |
OB |
. |
OC |
. |
0 |
. |
OC |
. |
a |
. |
a |
. |
OA |
. |
OB |
. |
OC |
. |
0 |
. |
OC |
. |
OA |
. |
OB |
. |
OC |
AB |
. |
OA |
. |
OB |
. |
-OA |
. |
OB |
OA2 |
OB2 |
. |
OC |
AB |
. |
OC |
. |
a |
. |
a |
. |
OC |
. |
OA |
. |
OB |
OD |
. |
OC |
OD |
. |
OC |
2 |
OD |
| ||
2 |
| ||
2 |
|m| | ||
|
| ||
2 |
BC |
AD |
A.(2,
| B.(2,-
| C.(3,2) | D.(1,3) |
OB |
OC |
1 |
2 |
| ||
2 |
π |
6 |
AB |
OB |
AB |
OB |
d |
O1A1 |
e1 |
e2 |
e1 |
e2 |
0 |
e1 |
e2 |
a |
e |
e |
b |
e |
e |
a |
b |
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