m |
n |
3 |
m |
n |
m |
n |
3 |
3 |
m |
n |
3 |
π |
6 |
m |
n |
π |
6 |
π |
2 |
π |
6 |
π |
6 |
5π |
12 |
π |
6 |
π |
6 |
5π |
12 |
π |
6 |
5π |
12 |
π |
6 |
π |
2 |
π |
12 |
π |
6 |
π |
6 |
π |
12 |
π |
6 |
π |
12 |
π |
6 |
x |
2 |
a |
b |
a |
b |
α |
2 |
α |
2 |
π |
4 |
6 |
π |
2 |
A.钝角三角形 | B.直角三角形 | C.锐角三角形 | D.形状不确定 |
3 |
| ||
2 |
A.π | B.2π | C.
| D.
|
A.直角三角形 | B.钝角三角形 |
C.等腰直角三角形 | D.等边三角形 |
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