a |
b |
c |
a |
b |
c |
a |
c |
b |
a |
d |
d |
b |
a |
c |
d |
a |
26 |
d |
a |
b |
c |
|
5 |
9 |
8 |
9 |
a |
5 |
9 |
b |
8 |
9 |
c |
a |
c |
b |
a |
a |
c |
b |
a |
11 |
18 |
d |
d |
b |
a |
c |
d |
b |
a |
c |
d |
a |
26 |
|
|
d |
d |
a |
b |
a |
b |
c |
a |
b |
d |
a |
b |
c |
d |
c |
d |
a |
3 |
b |
a |
b |
a |
b |
a |
b |
A.-2 | B.-
| C.2 | D.
|
a |
b |
a |
b |
A.(5,-3) | B.(1,-3) | C.(5,3) | D.(-5,3) |
OA |
OB |
π |
6 |
AB |
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