AB |
n |
AC |
n |
n |
BC |
AC |
AB |
BC |
AC |
n |
AB |
BC |
n |
AB |
n |
BC |
n |
AB |
n |
AB |
n |
n |
BC |
a |
3 |
b |
π |
3 |
2π |
3 |
a |
b |
A.
| B.4 | C.2
| D.3 |
OA |
OB |
2π |
3 |
OA |
OB |
A.3 | B.
| C.
| D.
|
AP |
BP |
PC |
AP |
BP |
OA |
OB |
OA |
OB |
OC |
OA |
OB |
A.等腰三角形 | B.等边三角形 |
C.直角三角形 | D.等腰直角三角形 |
a |
a |
b |
a |
b |
5 |
b |
A.
| B.2
| C.5 | D.25 |
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