a |
b |
a |
b |
b |
a |
b |
A.32 | B.16 | C.0 | D.-16 |
a |
b |
a |
b |
a |
b |
a |
b |
1 |
2 |
b |
a |
b |
a |
b |
b |
3 |
AP |
PB |
A.[-
| B.[-
| C.[-
| D.[-
|
AB |
AC |
AB |
AC |
AB |
AC |
AB |
AB |
BC |
3 |
AD |
AC |
MD |
AC |
a |
b |
a |
b |
A.0 | B.(-12,12) | C.25 | D.90° |
OA |
OB |
OC |
0 |
OC |
AB |
A.-1 | B.1 | C.-2 | D.2 |
AH |
AB |
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