p |
π |
2 |
AB |
p |
AB |
5 |
OA |
OB |
AC |
p |
OA |
OC |
AB |
AB |
p |
AB |
p |
AB |
5 |
OA |
OB |
AC |
AC |
p |
4 |
k |
32 |
k |
4 |
k |
4 |
k |
32 |
k |
1 |
2 |
π |
6 |
OA |
OC |
OA |
OC |
OA |
OC |
5 |
1 | ||
|
2 | ||
|
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 |
a |
b |
a |
b |
a |
b |
a |
b |
α |
β |
α |
β |
α |
β |
α |
β |
A.-
| B.
| C.
| D.
|
a |
b |
c |
a |
b |
c |
a |
b |
c |
a |
a |
b |
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