AB |
AC |
AD |
A.(-8,1) | B.(-1,-
| C.(1,
| D.(8,-1) |
AD |
1 |
2 |
AB |
AC |
AB |
AC |
AD |
3 |
2 |
3 |
OA |
AB |
A.1 | B.
| C.
| D.
|
AB |
AC |
BD |
A.(-2,-4) | B.(-3,-5) | C.(3,5) | D.(2,4) |
a |
b |
a |
b |
A.9 | B.1 | C.-1 | D.-9 |
a |
b |
c |
a |
b |
c |
A.
| B.
| C.
| D.
|
m |
n |
m |
n |
m |
n |
p |
p |
q |
q |
A.(2,1) | B.(-2,1) | C.(2,-1) | D.(-2,-1) |
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