a |
b |
c |
a |
b |
c |
a |
a |
b |
c |
a |
b |
c |
a |
c |
a |
a |
b |
a |
a |
a |
a |
b |
a |
b |
a |
b |
1 |
2 |
a |
b |
a |
b |
a• |
b |
a |
a |
b |
A.
| B.
| C.
| D.
|
a |
b |
3 |
a |
b |
A.
| B.
| C.
| D.
|
p |
π |
2 |
AB |
p |
AB |
5 |
OA |
OB |
AC |
p |
OA |
OC |
AB |
AC |
AC |
AD |
AB |
AD |
A.钝角三角形 | B.直角三角形 | C.锐角三角形 | D.不确定 |
a |
b |
2 |
a |
a |
b |
b |
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