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 |
BC |
BD |
AC |
AB |
AD |
AB |
AC |
AD |
AC |
AB |
AB |
AD |
AB |
AB |
| ||||
|
|
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 |
a |
b |
a |
a |
b |
13 |
b |
A.5 | B.4 | C.3 | D.1 |
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